Hmmm...besides the standards here are a few of my faves.
Scum of The Earth Vol. 1 & 2,
What A Way To Die
Hipsville 29 B.C.
Searching In The WIlderness
Open Up Your Door
that's a taste for now...
Hard to compare comps with >= 3 volumes to those single volume versions. On the single vol. version; Hang it out to Dry (how could it not be great with Lily on it) and I Was a Teenage Caveman excel. But there are so many good ones that is almost worth starting a list for the comps that just don't deliver......although the Chosen Few from the aforementioned list drew my attention because never heard before - thanks, now I must find or cannot sleep.
Finally, I am a fan of all regional comps because you get a good local history lesson while listening. Just about anything Texas is worth a listen.
some i could think if now...
Return of the Young Pennsylvanians / Pennsylvania Unknowns
Is "Garage Beat '66" considered a standard yet? That series and "Back from the Grave" get the best stuff out.
"Psychedelic States" is hit or miss, and for whatever reason, whenever I find them in a shop, the discs are in really shit quality, even if they're still wrapped.
"Don't Press Your Luck: The In-Sound from Connecticut" and "We're Gonna Change the World!" are my two favorite regionals. I hate to sound like a Sundazed fanboy, but hell, I am. Oh well.
Oh! "Ft. Worth Teen Scene!" Classics, all!