I'm with the crowd generally... PSP Xenon has replaces Waves L1/2/3 software, and we long ago sold off the L2 hardware. No contest. I have Ozone 4, which is a good limiter for the things Xenon isn't so hot at, and offers multiband capability. I've found Vintage Warmer 2 to be a very useful multiband loudness tool, in small doses ahead of the main program limiter, in fat mode, for a little extra gas.
I dig PHP mastercomp, and MH Channelstrip comp, but more often use MIOcomp (not quite plug in since you need an MIO to run it).
EQ wise, I still use the old SonicStudio EQs a lot, especially for broad strokes (high pass, broad shelf-like bells), but rely on PSP Master Q and MIOEQ for other stuff. Quartet DynEQ solves many problems that require surgical eq. PSP Neon in NON linear phase mode is also quite nice. And of course the Algorithmix EQs can't be beat, even in hardware, at what each color does respectively. We have a Sontec so, well, you know... sometimes hard to stay outta the analog dirt....
RX is indeed amazing. I've had it for awhile, and it's all but replaced NoNoise and Sonnox over here. It's faster/better than all other options, not by a little. Truly amazing.
When I'm working in a room with UAD I've found myself delighted by options there - very solid performers that behave like the hardware (a mix room I use has LA4s and we had LA2As at my old job, and the UAD models are so close it's scary - even the BAD things are there). I think UAD has closed the gap between models and hardware in many areas. And high end digital (Weiss, +DSP in MIOs, etc), we can do things analog never could.
Platform matters with plugs. For example PT HD STILL chops every plug back to 24 bits in TDM at the intersection, which artificially limits quality. Sadie, Sonic, WL7 (and I suspect Sequioa) will hand off however many bits the plug spits out. The best plug is only as good as it's host.
-d-