It really depends on my mood, I've kinda outgrown JRPGs and some of the themes in the genre seem to get old pretty quick but then again there are some interesting ones. I liked the Dark Cloud and Kingdom Hearts series and a few of the ones on XBOX 360 have me interested. JRPGs tend to have more linear stories and progression but sometimes that's just what I want from a game. Turn based combat can be good, if done right, I liked the combat in Enchanted Arms (the only good part of that slop of a game) but the active time battle system from the FF games gets really annoying really fast.
I play more Western RPGs nowadays, infact its a western RPG that is one of my favorite games of all time, KotOR II: TSL. You are often given more ability to personalize your character and they are more open ended more often than not. I also like that quite a few WRPGs also allow you to choose dialogue or actions that have definite impact on the game's story and/or gameplay. However these games are just as easy to screw up as JRPGs, or did you people not hear of the little game called TWO WORLDS? How about Too Human? Not to mention that while slaying orcs, aliens, or government agents is fun you get tired of them when it seems like every game has them, just under a different name.
So really, both genres have thier merits it just depends on what you're in the mood for and how well the game is executed. sorry about the load of text, I tend to ramble often. Like this one time, I tell you, I couldve taled the head off a ploitician , imean total... (trails off into the distance with various yarns, axioms, jokes and phrases)