well if you go with any type of stg 2's you'll need to swap the springs the stg 1's give you real good power because from this other thread the VT stg 1's give about 30-35 hp tuned and the VT stg 2's only 10 more hp don't know about the comp cams stg 2's on the difference.
As said above, if you don't want to swap springs but want a rougher idle with more power, then VT Engine Stage I's are a good idea. Don't know for sure how much power the Comp Cams are making.
IMHO, if you can afford it, then I'de go with Stage II's and swap out the heads for a set of Stage II heads. Might as well do it all at once if you can afford it, cause either way you're going to need to get the car tuned after any cam swap.