Yeah, four VTF-2 mk5s would be a big jump over the PL200s. The PL200s don't really do deep bass well, they are more comfortable at 30 Hz and above. The VTF-2s have significantly more mid bass and a lot more deep bass. The VTF-2's are a lot more linear too, they have a neutral frequency response. The PL200s are good for the price, but they are not in the same league as the VTF-2 mk5.