I've spent some time and money on the dream blues guitar quest.
In my opinion the best body styles are O/OO/OOO and OM
The O's having better mids and the OM having a better balance.
Adirondack is probably the ideal top but Sitka works well too.
Brazilian or Mahogany are ideal for the back and sides (all mahogany sounds great too).
If I could only pick one it would be my Brazilian/Adi OO:
http://www.youtube.com/watch?v=2YFrvmZP5g0
Here's Al Petteway playing it:
http://www.dreamguitars.com/preowned...0-21_75143.mp3