They are solid, underrated in watt output, high quality, reliable, and an excellent value.
I have 3 JBL amps in my boat and are still cranking like new after many years of abuse.
If you can spring the extra cash, get the BPX1100.1. But you can't go wrong with any of their other lines.
Hustler is pushing two W6's with a JBL P600.1 and his system POUNDS