I use an older 3PK and have had it now 4 yrs or so. It has capabilities I'll never use or even understand. I haven't moved to their FASST system due to cost (I have 13 rcs I'm running off the 3PK) and since I just bash, I would rather put the money for new radio plus 13-14 new rxs toward another rc or some hopups. I've never had probs on FM and can drive mine literally out of sight range wise. Don't see how could be better, just newer.

Its an impressive looking tx though, but for me, I'd have to find a deal like I did for my 3PK before I'd consider one. Think you'd need to be an elite racer to really benefit from 4PK's capabilities. Other txs will give you 95+% of same capabilities for a less $$s. If you want the best though, thats the best Futaba's got to offer currently and will be their flagship tx for several yrs to come.