Loads of opinion on this site about CCDB's.
Here is something I wrote a few months back...
I run either a CCDB or a TFT tuned and Pushed Float R. The Float was hopeless when I first fitted it but now it's tuned it is a great shock. I used to have a coil DHX4 which I ran almost all the time rather than the poorly performing Float. I fiddled plenty with the Float and DHX before sending the Float to TFT, it took two goes to get the Float how I wanted it and rather then do the same with the DHX I decided to try the CCDB so I can have a right good fiddle myself.
Mostly I run the tuned Float now which I think is amazing and out-performs the non tuned DHX4 Coil… seriously… it is that good!
The CCDB is better again. I'm still setting it up and trying different things but there are times with the CCDB when it feels absolutely amazing like it's giving you speed on the pedal strokes on climbs, or when riding the back wheel (manualling) at speed through rough stuff it's like it's supporting the whole bike holding it up with a big plush hand.
As I mentioned before there are also times when it feels a little dead like it needs a thump to get the oil flowing and work it's magic… as a general rule the harder I'm working it the better it feels. When going from a flat path to a little rock off the trail to get a little "pop jump" the CCDB feels lethargic and won't play… it's like its saying "what the F*&^ is that???"… a similar rock on a rough path at speed the CCDB will lap up and give me all the pop I want in a super controlled way.
But… back out the adjusters too far or get silly with them and bike is nigh on unrideable… shows you just how good most shocks are... very very amusing.
If you want fit and forget great performance get a tuned shock. If you want to take it to another level and are happy to fiddle and consider playing with your suspension part of the fun then the CCDB is a great toy.
I like the CCDB but it needs gnar to really shine. My main reason for buying it was to fiddle so I can work out what LSC/HSC/LSR/HSR are and what they feel like... it is a very user customisable shock which is either a good thing or a bad thing? It's possible to make a right pigs ear of it and small changes can have a surprisingly large effect. One friend who has tried mine prefered the tuned Float. I've since tweaked the CCDB settings a bit and I'm happier with it but he might not like it. Weight wise it's a lump... there is a whole thread dedicated to the Ti spring debate... but if your concerned about weight I would buy an air shock or get your one tuned... seriously, tuning your air shock will probably make a huge difference, and it's cheaper and lighter!
You can try tuning it yourself with the air spacer kits... or pick up the phone and speak to one of the tuning professionals about what you dislike about what you have, they are all very helpful.