We started using the PC 650 just to make sure and get some hours under her belt during the warranty time. 1,500 hours later it is my first choice to go out, and mainly performance is similar it 'd just the 650 is sooooo much quieter. During the recent extractions we took the V out more due to double waste tanks and the V is a beast! I will replace the blower silencing chamber (Mikey says Aero Techs replacement in considerably quiter)