I never liked cow milk, except in cereal. So in looking at various foods upon becoming vegetarian, I decided to try other milk alternatives. I've tried four types of soy milk so far, and they've all been completely different. As others have said, you might just want to try a variety of types, of soy, rice, and almond milk.
Trying soy milks, Silk chocolate is a little too sweet for me. Publix (Floridian supermarket chain) has good vanilla, but their plain is vanilla flavored, too, which struck me as odd and too strong for cereal. My favorite for cereal is Silk plain. All in all, though, I've liked all of these more than I ever liked plain cow milk.
Unfortunately, Publix doesn't seem to have rice or almond milk, and that's where I do most of my grocery shopping. I'll have to look for those to try next time I go to Whole Foods, which is about half an hour drive for me.