Sorry if Old but it looks like the Psp recently got a few more Greatest hits
Smackdown vs Raw 2006
I have played both and these are 2 excellent additions and well deserving additions to the Greatest hits. For 20 bucks If you have not already checked them out, I would highly reccomend them.
And Yes the load times in SvsR are as bad as they say but once u get over that it is a great game