If size isn't a factor, then the SVS PB-10 ISD is a better choice IMO, for the money. I replaced my VTF-2 with the PB-10 and I'm quite satisfied with that choice. If I had to choose between the STF-2 and the VTF-2, I'd say the extra $100 would be better spent on the VTF-2 simply because you get the ability to tune it to max extension vs max output, and the extra 50W certainly won't hurt either.