These are the same ones I use for most clients at www.ThunderSitesHosting.com.
These themes can be used as is straight out of the box or as starting point to create custom designs.
Until Tuesday August 28th you can get all 46 of the StudioPress WordPress child themes in the StudioPress Pro Plus All-Theme Package, plus every child theme design they make in the future, for only $299.95. That’s a savings of $912.75 if you purchased everything separately.
The price goes back up on Tuesday, August 28, 2012 at 5pm Pacific time.
Read more about the StudioPress Pro Plus All-Theme Package