I pretty much exclusively use waves for mixing. I can't say I do mastering, but i do 'finish up' my sessions with waves.
I love the IR-l verbs and rverb. Use the eq's a lot too.
The limiters are good, but to be honest, for compression I usually reach for the standard digirack plugs.
I paid the full whack for waves platinum years ago which is probably why I never looked at other brands, but sometimes I think i should learn to use more of the waves plugs that i have.
Sometimes i'll use the choruses and delays. I find them all to be easy to use and great sounding but there are probably cheaper alternatives that do just as well now.
I've thought about selling my bundle recently for that reason.