PAUL, I still can not decided P3 or P5 I know there is a power handling diff. but is there a sonic diff between them .My system is PWT, PDS , and wyred4sound class D AMPS. SX1000 mono"s no preamp at this time, may-be down the road what is the best way to go

Absolutely. Each iteration sounds different, they get better as they get bigger. The 5 sounds better than the 3, the 10 sounds better than all of them. The reason is the power supply. Bigger is lower output impedance and that sounds better.