Any Resources For Comparing Themes?

I'll start by saying that I love Drupal, and I deeply appreciate any and all work that is donated to the cause. The project is =amazing=, and I'm glad to see that it has gotten good "traction" in the "market".

I'm about to set up another Drupal site. On previous site, the biggest expenditure of time and frustration was in selecting and modifying themes. Most of the non-trivial themes have had "gotchas" that only showed up under certain conditions, and which required a theme change or "messing around" with HTML and/or CSS.

Can anyone recommend:
1. A resource that rates the sites on "sturdiness", cross-browser compatibility, known bugs, etc., and/or
2. Themes that are known to be rock solid, i.e., won't start doing odd things if I make small tweaks like adding my own bitmap for the logo?

Thanks!

Alan Cohen