I'm biased ... my new 0560BW (black wash!) just arrived, and so we're in that honeymoon phase... so if I had to pick one, I'd go 0560BW.
They are both amazing knives! You can't go wrong. Like you, I preferred the plain Ti look of the 0550 -- for me, the machined Ti on the 0560/0561/0561blk looked cool but just too flashy (it looks, to me, perfect in pictures, but almost ... sparkly... in person. Nothing wrong with bling, just not my thing on this knife).
But then they came out with the black wash version. Good bye, savings. Hello 0560BW!! I love it, the handle looks like a worn medieval sword or something.
I really like both knives in the hand. I prefer the 0560 in the pocket, though, because the handle thickness is thinner overall and the rounded corners help there, too. Whichever you get, enjoy, and count on getting both eventually.
