I think the BK5 sounds up there with my PA 3x to be brutally honest. It probably hasn't got the same level in some voices such as DNC or Yamaha's SA voices. but the overall mix sounds great - very warm and live.

Another major plus is that is seamlessly plays almost any or all Roland Style formats from previous G and E series keyboards!!

the one big drawback for me is that the BK5 doesnt have dedicated part mute buttons for the 8 style part tracks.

Neither does the PA3x but it at least has the faders and the 3 assignable switch buttons which i can allocate to drum, accomp, and bass part mutes without having to go through menus during live play.

Just my 2 cents

-Nick