Based off that description, you're probably not going to be skilled enough to notice a speed difference between the 3PV and the other radios you mentioned, there's not much in it. The main benefit you'll get from a new radio is better ergonomics.

You've already gone through several radios in a short amount of time. I'd suggest you hold off, save the money and go for a high end radio in a couple years. Incrementally buying small upgrades will cost you more in the long run.