I've heard good things about the Maxon OD820, too, though it actually costs more off the shelf than a Analogman-modded OD9!
Well, anyway, some tubescreamer variant is on my shopping list for the future, though I don't know if I'll go as far as boutique mods (maybe!). But two of my "tone touchstones" use Analogman-modded 'screamers: Trey Anastasio (who I like on the lighter end of tone) and Tony Iommi (who I like on the heavier end :twisted:), and I liked how I sounded with the Maxons I tried, so I guess it's all good enough for me ;).
Gotta choose my BKPs first, though!