It's been a long time since I came to the forum but since I need some advise, no better place to turn to

My Pa800 is struggling for it's life (buttons, memory, and so on) and I need to choose a replacement, being the choice PA3x or P4x. I've been playing live with a friends PA3x for quite some time but my overall programming is done on pa800.
well, first off all I make 90% of my styles, and use some sonor samples for drums and musicman bass samples as well. These 2 are 95% of the times present on my styles since I want to sound as much as a live band as I can.
All other sounds for style accompaniment tracks and solo play are the ones from factory except 2 or 3 multisamples and organs which I play from my beloved NORD Electro 3.
With that in mind I would say that there is IMHO not much a difference (sound wise) when playing with PA3X or PA800. I do not use (yet) maxx audio on the pa3x because I have a FOH technician and output DRUMS+PERC (OUT1) BASS (OUT2) and UPPER+LOWER+ACCOMP (L+R), all pushed by 4 BSS DIs and didn't test it out extensively.
Here is the question, do you PA4x users think I will notice a upper improvement on sound output?? Apart from all the other major improvements my main point of choice will be sound output thru external speakers and ease of style programming plus added functionality for style programming as well.
Sorry for the long boring text and I thank in advance everyone who could share their thoughts on the matter.
Best Regards,
Mauro