26 Jun 10 7:37 pm
I'm using Thesis 1.6 on my main site with wp 3.0. But I'm avoiding upgrading Thesis to 1.7 (See the DIY theme support forum for reasons why.)
Although Thesis is very flexible, it's buggy. Many owners who don't have the technical understanding of hooks and such have problems, especially with plugin compatibility and making design changes.
If you're not willing to spend time keeping up-to-date on the forum, I'd avoid the theme.