Hi Spalding
I did load the Bonus drum kits samples and overall the loading time with autoload PCM and the Op Sys seemed to be about 30% quicker than the pa1x. As for the poly, I really did not have any problems with the PA1x so I did not notice any significant improvement or otherwise with the PA2x. Perhaps the extra voices are just helpful with the additional RX noises.
BTW I should clarify that the acoustic guitars and the unplugged styles on the PA2x are exceptional, but if you don't use them they are pretty useless. Most of the rock styles are almost a clone of the pa1x, as were a lot of the jazz and ballad styles so for me there was no improvement as most of what I do centres around rock, ballads and jazz tunes (yeah I know an odd combination!!!).
Hope that helps
Dennis,
PS Spalding as I mentioned in the OP, I think this is a transitional board. In fact after finalising the return to the dealer today we got to talking about a PA1xpro Elite he still had in stock, and he mentioned a very VERY attractive price, so maybe even a step back to the PA1x might happen too??!!