Vandersteen 2s do sound good with just about electronics but I'm not sure they really rock (I own them and now mostly listen to acoustic music). However, they might be a good match to your electronics if (as other posters say) they are a little bright, as they do tend to be a little laid back. They would sound great with jazz and chamber for sure.
What to do? What to do?
I need to acquire speakers for my system (Acurus ACD-11, Aragon D2a2,Aragon 18k, kimber 4pr and pbj). I currently own a pair of BW 620 (free for helping my neighbor move). They've never wowed me with my rock music (which is about 50% of my collection) but I enjoyed listening to chamber and jazz on them. I'm a grad student and this will be my first real speaker purchase, so budget is an issue. What direction should I take in my search for some accurate speakers.