I loved builder as it made it super easy to create my own layouts (which made it easy to have the inside of a membership site look different from the outside). Headway Themes does all of that and there is a lifetime of free upgrades. Watch this video about Headway as this dude creates a pretty amazing website in 10 minutes. I get the feeling this is just the beginning with this theme.
In looking into some of the details of the theme it does remind me a little of Thesis where it has its own world of terminology (leafs vs widgets). From what I've seen, it is very flexible. You can do just about whatever you want it to do without adding another 12 plugins to rotate images, hide widgets, etc. I have never been a big fan of diving into code, and this looks like I will never have to.
Headway starts at $87 for the personal version (for use on two sites), or the Developer version goes for $164 and the encourage you to build clients site with it. Very cool. For more information go to headwaythemes.com