iDNS does exactly what it says:
"makes setting up your own DNS server as simple as possible."

Being able to set my entire home network in under 10 minutes and for it all to work is fantastic. I don't have to fiddle arround with numerous files and make sure each of them is exactly right and then spend hours troubleshooting to find the problem is a missed "." or entered something in the wrong order.

Some comments posted alreay say there aren't enought features etc but for me it works fine, ROBACKJA, you seem pretty experienced in setting up BIND and the things you mentioned seem very advanced to me, however support for dynamic DNS would be good. Perhaps the developer has plans for adding support for these different things which is why i've only given features 4.
"How about fixing the flaws in the ServerAdmin interface," iDNS seems to fix atleast one of these flaws with the reverse zones, they are completely controlled by the program so you don't have to worry about theses.

So far I've had no problems with setting up and running the server, if I have any problems I'll be sure to come back and let you all know, and will definiatly use my "60-day money back guarantee.". However £25 is fairly expensive but not unreasonable or nearly as expensive for apples server at just over £400.