Hi Joel
There is plenty of variation in the CSP range. There is the regular model (deeper body shape) and the slim models which naturally have a skinnier profile. Depending on the model, they can be in a floating or sinking version. Sizes range from 55mm to 300mm!
Just to be confusing there is also the new EXT versions which have a harder resin in the body and thicker wire as well.
My favourite CSP's for GT are the S180s and S220s (slim sinkers) and the CSP200 (normal body floating) The sinking ones are a no brainer to use and work well in a variety of conditions. you can twitch or walk them, flat stick wind or slow roll depending on what the fish want. The floating model has a great darting/rolling action, but like Barry says, it is easier to get it swimming in choppy conditions, unlike many other floating stickbaits. On flat calm days it will tend to want to skip and skitter unless you sweep it quite slow.
I actually think the skitter and skipping action was what Tsurusaki san (the designer) had in mind when he first developed it, but in my opinion it is the way they swim sub-surface has been more the reason for their success.
Cheers
Duncan