I really want to like Coda 2 as I have been exclusively using Coda 1.7.x for the last two years. Last night I downloaded a copy from the App Store and jumped in to see the new features.
I am now left feeling like someone kicked me in the gut. I guess I would say Coda 2 is heading in a different direction than my web development. No syntax support for Haml, Coffeescript.
Code folding doesn't work for these either types unless you manually select a block and fold. The preview feature doesn't work for a Rails based site.
So then, download the demo and take it for a spin, but make sure it fits your needs. If it does, you will probably love it, otherwise you may have outgrown it. I immediately purchased a copy of Chocolat (itself still in beta) and am planning on saying goodbye to Coda. I feel like I am losing a friend.

After a few years of holding out I decided to make the jump from Office 2007 to Office 2011 for Mac. After getting over the loss of all my customized ribbon interfaces, I am now finding Excel 2011 is seriously broken and hobbled to the point of being useless. Pivot tables aren't formatting properly. Page breaks in data tables aren't begin honored. Can't even find name management option for named ranges. All kinds of visual and interface quirks. I bought this so I could stop using Parallels since I upgraded to Lion and didn't want to buy another version. With a few months of work I might be able to figure out how to get my worksheets from 2007 to work correctly in 2011. Talk about a few steps backwards.
If you use Office, especially Excel, this steaming pile of an attempt to make a decent version of Office for Mac will only make you angry.