Funny, I was just talking about Mandarin, Japanese, and Korean with my Cambodian in-laws last night. Cambodians think Korean is the easiest to learn because it is written phonetically like English and Khmer, but unlike Khmer, there is no need to change the bottoms and tops of the characters according to what letter they are placed next to. I've seen Cambodian university graduates struggle to find a simple word in a dictionary of their own native language, and this has always kept me away from learning how to read and write.
Japanese seems intimidating too, at least the reading and writing. I've heard speaking it can be easy to learn because there are very few sounds in the Japanese language. Good luck with your studies, hope you find time to get back to it.