If you're doing any Country/Western, the PA80 is really weak in the styles. It doesn't even have a basic Country Shuffle or Shoddish and not much of a CW Waltz. I had to make my own.
I also found that, while the styles in it are basically great, they are so individualized that if you use the same one very often, it becomes quite recognizable.
There are style available to load, but I couldn't seem to make them sound as good as the factory ones.
The PSR2000 styles are not as exciting and I guess more basic, but they are very useable in live situations, particularly if you can play the riffs and fills yourself.
My opinion is Ketron has the best sound and best "live" styles. I loved the X1 except for the fact that the fill and ending buttons were on the wrong side of the keyboard for my use.
I wish I could find an SD1 or Vega or XD9 to try out. The rep is supposed to be bringing one when he comes through, but so far no word.
I loved the PA80 until I did a few live jobs with it. Then it was love/hate. I loved the sounds and some of the features, but I missed the Vocal Harmony, fills, intros endings, breaks and overall user-friendliness of the PSRs.
DonM