I upgraded to X2 from V9 last May. I've had no problems with it at all. I've always loved PSP. Been using various versions since V4. Laid off of doing creative stuff with it for a couple of years and used V7 just for photo printing even though I had 9. When I started digi-scrapping last Jan I started with 7 then moved to 9. After a few months when I knew I'd stick with it, I bought X2.
By the way, I have just signed up for the Beginner class :) Even though I have been using PSP for so long, there are some things in that class that I never understood so.....
Here I am!