Pioneer Dehx3500ui VS Pioneer Mosfet 50wx4 - Which is Better?

http://www.youtube.com/watch?v=5DOuCHR3mEY Pioneer Dehx3500ui VS Pioneer Mosfet 50wx4 http://enliwen.com/pioneer-dehx3500ui

Pioneer TS-swx251 - The Pioneer TS-swx251 Review

http://www.youtube.com/watch?v=ucWrLrql5dE Pioneer TS-swx251 Review http://enliwen.com/pioneer-tsswx251