If you could only pick one, any thoughts on taking a trip to Nara vs Arima?
I know which one I'd go to but I'm confused that you'd even think of this as a dilemma, so I think it's probably better that you just look at some pictures and make up your own mind:
http://www.japan-guide.com/e/e3558.html
http://www.japan-guide.com/e/e2165.html