I would definetly get it if I owned a psp. Valkarie profile was/is one of the best RPG's ever created in my opinion. It comes right behind legend of the dragoon and FF7. The side scrolling elements I think make it more interesting, and you'd be suprised how confusing a dungen can still be in 2-d. The battle system was simply amazing, and my MOST favorite of all time. It amazing how they can make what at first seems like a simple system so complex and fun. I honestly think I will never get bored of that battle system. The different ways you can make combos, change weapons for different attacks, charge up with super attacks (four combo/super attacks in a row kills everything!) and switch in different characters for customisation just makes it time robbing to me. I thought the game was completly awsome (except for the voice acting...*shivers*..I think one guy seriously was the voice actor of Ash from pokemon...) I would highly suggest the game especially now that they have new voices and CG movies. Well, I'll stop my rambleings now.
P.S. oh and about the combos now. I would suggest using jelenda first, then the merc guy (forgot his name) and whoever you have in triangle in rapid succesion, then quickly do valkrie. Just try different combos and eventually you'll find a way to do it. And the number of attacks you do has to do with your weapon. Change it if you want more attacks. In fact i traded a 750 sum odd attack for a 360 sum odd attack just becuase of more attacks, it helps alot. Also, If you stuck you can ask me, I've gotten thorough a good portion of the original one.