Three of my sites are using John P.'s (Pozadzides) free theme, Rapid Access -
http://onemansblog.com/2007/04/30/free- ... id-access/
I really like it, been singing its praises for a couple years, actually! John updates it periodically (though not as often nowadays, since he came out of retirement) and he is very helpful.
The coding is a little different, but, once you get the hang of it - no problem. Plus, John has notes within the code to help you out!
(But yes, I can definitely get lost 'theme-shopping'!!)