I've owned a lot and use a bunch of different compressors, but at the moment I have 3 Aphex 651's, 3 DBX 160A's, and pair of DBX 163X's and a Ashly SC-50.
The Aphex and DBX 160A's work for me on vocals, acoustic instruments, and electric bass and clean guitar. I haven't received the Ashly yet but I bought it to use on lead electric. And the DBX work fine if I want to use them on a drum buss to tame things a little.
I'd like to get a stereo compressor that works for pop piano...maybe once I finish modifying the 163X's they'll be cleaned up enough to do so.
None of this is very high end, but these units have replaced a 2-1176, Manley ELOP, and other "slutty" pieces. Heck, I only paid $800 for all that stuff I listed.