Waves has been ok in 3c for me as well. I love the Renaissance bundle, I think it's one of their best value for money bundles. I use RComp, RVox and RDeesser all the time, and RBass, RAxx and IR-L somewhat less frequently. Renaissance Channel and REQ are good, but probably not really relevant anymore. The more software compressors I hear, the more convinced I am how good RComp is. For me, nothing that comes with Sonar is even close. I do also have CA2A and do think that's excellent, but a different style and not nearly as versatile.
Recently I upgraded from Renaissance to Diamond, which has also been on sale. I'm happy with the L-series especially, and there are a few other good ones in there, but nothing near the ratio of the Renaissance bundle. Just my 2c.