This whole Sssss thing with the VP150 I find a little odd. I have one (W150), and W22's and I just don't really notice it at all, even if I listen for it. Obviously there is an Sss sound but I don't notice it to be any more pronounced than when speaking to someone normally in person.
If you sit more than 12' from the speaker, buy the 150, otherwise the 100 is probably fine... At least this is what Axiom told to me when I bought my setup. For the $120 or whatever if you watch movies a lot I would (and did) buy the 150.
