Korean is easier to pronounce, but Japanese is easier to read. Try reading a Japanese children's book that doesn't use kanji. It's excruciating.
Good luck with any other language. Japanese is tougher since you have to memorize thousands of what are basically hieroglyphics and learn two separate alphabets (one for native Japanese, another for foreign).
With Korean you can express many sounds phonetically (with some abstractions for non-korean sounds)