HANDYCAM  Version 5.8 is like Safari with every Safari add-in already in it. I prefer WebKit over Gecko, and OmniWeb offers that plus additional features such as site preferences and workspaces that further enhance browsing.

Oh, and I run 5.8 for hours and the RAM hovers just under 250mb.  
(Version 5.8)

MARK_CAIRNS  It really is still the most gorgeous of the Mac browsers. The tab system out to the left, and the Favourites dock (with your links and their relevant .ico file beside) at the top is by far the most elegant solution to any of the browsers.

Only prob I've ever had with it is with HOTMAIL, but Firefox 3 sorts that out. Apart from that 90% of my daily web usage is (was) as a paying customer of OmniWeb.

I also hope others now try it. I just never bothered with Safari after version 3 came out due to Omniweb.  
(Version 5.9)

YAYPEA  I have been using OmniWeb exclusively for 3 years now. It has served me quite well with minimal problems.

I am now using the 5.9.2 version which incorporates the new Nitro WebKIT engine. Although this is an alpha release, it has been rock-solid so far and is extremely FAST! It also passes the Acid3 test along with Safari 4 beta.

For me, the "site-specific" preferences are a "godsend".

Also, a huge plus, is that they actually have tech-support. When I have had an issue or question, I have never had to wait more than 24 hours to get a helpful reply.

Now that it is free, what are you waiting on? Download it and try the best Browser going!  
(Version 5.9.1)

IINDIGO  I've been using the latest SneakyPeek build for a while now, and I gotta say, it's doing very nicely. I can't even really tell it's a beta.

One feature of OmniWeb that I've really come to love is the ability to apply custom stylesheets on individual pages - it gives me the power of the Firefox plugin "Stylish" without the nasty clunkiness and un-Maclike/"I'm faking it" feel that comes with Firefox.

Overall, the browser is great and I can't wait to see what version 6 holds in store.  
(Version 5.9.1)

FYREFLYE  Now that OmniWeb is finally free I hope more Mac users will try out this excellent alternative to Safari and Firefox. Its ability to customize individual web sites for cookie retention/rejection/erase when closing browser, for ad blocking/ad retention, for font size, etc. is matched by no other browser. Download the ad.subtract CSS from MacUpdate and use it as a style sheet and you have an additional level of ad blocking to use on a site by site basis. It still doesn't pass the Acid 3 test but it's now faster than Firefox and almost as fast as Safari.   
(Version 5.9)

THEBRIX2008  This must be an almost unique case of software moving from commercial to free (not open source) and speeding up in development ...

The difference between 5.9 and the new 5.9.2 Sneaky Peeks is spectacular. Not only is rendering improved (I can now use several financial sites which were unusable with 5.9 and the old WebKit) the whole application has become much more predictable in its behaviour, particularly when opening dozens of tabs at once; 5.9 frequently ground almost to a halt, or even crashed, in that case.

An unexpected surprise is that what looks like a trivial change on paper (automatically closing the tab drawer when the last tab is closed) improves the whole "tone" of the browser. The user interface may not have changed much in some time, but it still looks and feels good; there is nothing superfluous and I hope that OmniGroup resists the temptation to add CoverFlow or similar worthless bling as it moves towards 6.0.

After some time away I am back with OmniWeb as my default browser.  
(Version 5.9.1)

SIGIL  This is a great alternative to Safari. Omniweb is fast, stable and quite user-friendly. The developer is top-notch. They make great software at fair prices and offer awesome customer service. I only have two small gripes about this browser. First, I wish the interface was more eye-pleasing. Second, I wish the search interface was more like FireFox's search.  
(Version 5.7)

SNOWWHITESICKETTE  The English-only version is available at the developer's website.  
(Version 5.9.2)

SOUTHPAWAMI  As for 5.9.2... it does what you expect a browser to do... including a hundred options you don't expect from a browser. It passes Acid test, Acid 2 test, but not Acid 3 test. It can be fairly memory intensive compared to Camino, though the extra options and options on how the tabs are displayed can make it much more of a comfort.

As for 5.10 sneaky peek. It's a gem. Engine wise, seeing Acid 3 test pass 100 out of 100 really shocks a person used to seeing it fail browser after browser. Loading is faster than 5.9 which is to be expected, and the numerous options OmniWeb gives you in a one stop shop format are always welcome and don't seem to be anywhere else. I would compare it to Firefox 3.1 testing version and Safari 4 testing version... but I didn't find either stable enough to browse with for where I normally browse. However, thus far, Omniweb 5.10 sneakypeek is stable through where I normally browse(though I cringe every update, hoping for the best)  
(Version 5.9.2)

DARUKARU  With the latest 5.10 sneakypeeks, OmniWeb has all of the best features of Safari 4 (blazing fast rendering and JavaScript performance) with none of the drawbacks (Safari 4's bizarre tabs), and a bevy of additional features. The Site Preferences alone are indispensable—the ability to set custom style sheets on a per-site basis is something that every browser should ship with by default.

Its adblocking isn't quite as powerful as Firefox with Adblock Plus, and I wish it supported GreaseKit user scripting, but there's very little else to complain about.  
(Version 5.9.2)