I think I've been to the 壱番屋 curry house near いりなか駅 more times than I can count. I also made a lot of it myself when I was a student, as it would last me 2 or 3 days just for ¥450 of ingredients. I'm also a big fan of REAL Indian curry too, and the best I've had also happened to be here in Japan - in Nara, of all places. If you're in Nara and want some amazing Indian food, go for the tabehoudai at "Manna"