imho MX blacks are underrated as a typing switch. Some geekhackers swear by them. I mean, it's easy enough to say "they're not so great for typing, just look at the force diagram". But that's not the whole story. The switches really smooth due to the lack of a tactile bump. This helps with comfort. Further, the actuation point is, IIRC, a bit higher than browns and much higher than blues.
I know that I'm not saying much right there, but shoot, if you have a chance then try them out. Don't invest too much into the negative things some people say about the black MX (or any switch for that matter). It's the most widely-available MX switch, so it's no quest trying to find one on the cheap.
Oh, and for gaming, It's pretty easy to score an mx8000 series off of ebay. Many of these have full NKRO (with diodes) and are programmable.