I haven't built the StewMac, but I have built four others which are very similar (see my sig). The triple ought and OM12 are my go to gits - my martins and taylors don't get much play any more.
++ on the kit builders forum. The mod, Bill Cory, has just published a book (as well as an article in last months AG) - worth getting. StewMac's instructions are about the best of any kit - download the free pdf so you can see what you are getting into.
Here are mine
http://www.kitguitarsforum.com/forum...=125_0_6_120_C
http://www.kitguitarsforum.com/forum...id=961_0_6_0_C
And I posted a couple of sound clips on another forum - pardon the crappy playing
http://acapella.harmony-central.com/...hlight=Testing
Kits are a great way to get into guitar building without a huge investment in tools, but depending on your shop you'll easily put $1000 - 1200 into your first one.