I like both. But as a whole Western games tend to play it safe and aim for pretty graphics, realism, and use western story cliches that I can spot from a mile away -none of that really appeals to me XD graphics don't age well, games that look good now will look like dog shit in less than 15 years so it's not a factor to me, I like escaping realism so that doesn't work for me either, and western cliches annoy me, thats why I really watch movies anymore -I can predict how it'll all work out 15 minutes in. So most western games aren't my cup of tea. Plus I dont like my games being like movies that much either 
Japanese tend to use more stylized graphics so even when they're old they look nice (Wind Waker, Persona, Dragon Quest 8, etc.), they tend to be really out there too, something I love since it's a nice change compared to the "super mature" western games, and they lack western cliches most of the time! :3 I bet they have a lot of Japanese cliches but since I'm not familiar with them (besides the old RPG cliches or being orphans or being royalty or whatever) they don't really bother me.
So for me Japanese
