The recurve on the 0301 makes it more of a pain to sharpen if you don't the right equipment. Otherewise, they are pretty comparable hard use folders. I have a 0561 and a blackwashed 0300 (same knives as the ones you are interested in, but different colors). I carry both. The weak detent on my 0561 makes me carry it less since it has a nasty habit of opening up when I least expect it and the darned thing is razor sharp. The 0300 is a bit more reliable in my pocket (i.e., it hasn't sliced me, yet). Also, I find I really like the acid-washed or blackwashed finish. It's just aesthetics. Feel free to differ.
Frankly, I've not found much to choose from in the blade steels, cutting ability, or comfort in the hand. However, I may not be the best judge of those sorts of things for you.
In neither case can you go wrong. Both are world-class quality knives.