I voted Cold Steel despite the fact that BM makes knives in the USA and has provided good customer service to me in the past. BM also has the Axis lock which I am not a fan of at all; relying on two little dinky, delicate, prone to breakage springs which is not confidence inspiring.
I have an BM Adamas, which I do like. It's been back for springs and a tune up, which BM took care of for me in fine form but hold it your hand and then put it side by side with the AD-10 and it's not even a contest. The AD-10 doesn't feel like a square brick in you hand like the Adamas and the Triad lock versus the Axis lock is a no-brainer to me as those little tiny, weak assed springs are what you are relying upon - unlike the Triad lock which uses a leaf spring like Buck has been using on their 110 Folding Hunters forever.
Aside from the Adamas/AD-10 comparison, Cold Steel just provides better utility and value over its line-up. I'm not saying that BM has not and does not make very nice knives, but for my money, Cold Steel has rugged, reliable (no piano wire springs) and hard working knives at attractive pricing. I will not comment on some of their goofy informercial videos as I'm trying to be nice.
Don't get me wrong, I've got a bunch of BM knives and I like them. BM has been good about replacing those dreaded piano wire springs of their otherwise decent Axis lock but when push comes to shove, I'll take a CS with the Triad lock and I'll take the AD-10 all day every day (twice on Sundays) over any other folder in its price range and beyond.