Soundtoys are the shit. Although I wish it would do more of the harmonizing type stuff you can get on a H3000 or on that goddamn amazing H7600/8000 - which I'm going to have to get!
UA - IBP, TD, Plate140, DimensionD, Cambridge (filters) and others get used here. Suprisingly moving away from their LA2A and 1176 emus.
Some URS but can sound a bit plastic to me. 99% of the time I just use the MIX EQs.
Sonalksis get used a lot here, I love the CQ-1, secret vocal bus weapon. Comp, Gate and EQ are nice too, Avoid their 'mastering' plugs, terrible limiter.
Sonnox reverb (I like the EQ and Dyn but can live without if I have some UA or Sonalksis stuff).
On PC the Eventide 2016 reverb is decent but the hardware is so much better... I just got one as I'm on mac where the plugin won't run except for PT.
PSP Lexicon are cool but lack some character of the originals, however Nitro is another sectret weapon of mine, seriously good sounding from filtering through to delays, waveshaping and stereo width.
I think the Waves Rcomp and Rvox do a decent job on RnB vocals.
Voxengo Elephant, Crunchessor, LF Max Punch and Voxformer are more than worth it. Elephant gets used a lot here.
Melodyne Plugin is great but I wish it would drag and drop midi out of it.
Altiverb + acousticas, SIR is great for free too.
On our PTHD rig, I like the Chandler stuff, ReVibe, Digi Reel Tape Suite and Crane Song Phoenix. Reel Tape is the same algomath as the Anamod and sounds really good for a plugin.
-T