if you liked cc1 and are getting cc2 you might want to look at fiery dragons pack 1 and 3(i think thats the numbers on them), ones called demons & devils and the other is denizens of dungeons & darkness. And if you got the spare money might as well get their pack 2, tribes cults & clans.
I dont think anybody has done an undead only counter set yet, but I myself would love to see a series of counter packs on undead done up, all undead nasties not just the bipedal freakies.
We use counters more than mini's in my games. I use print outs from campaign cartographer 2 and dungeon crafter more than I do a battlemat. I sometimes print out symbols or objects made in cc2 or cropped from images on the net and make them into counters for use on battlemats and such and it just looks better for whatever odd visual reason if the baddies and the players chars are all counters too instead of mini's. A couple of the players with artistic skill even make their own counters for their chars either doing the art right on a blank counter piece or doing it on their computer and then resizing the artwork so it will fit on a counter token.