I just don't. I've owned a few boards, and I've just not been impressed. In order of least-bad to worst:
1. Cherry clear with brown springs
2. Cherry clear with clear springs
3. Cherry blue
4. Cherry Black with brown springs (ghettored)
5. Cherry brown
6. Cherry Black (UGHHHHHHHHHH)
None of them feel like an upgrade to me, not even over my MS Ergo 4000. Even that membrane board has more tactile feedback than most of the boards i've owned.
And cherry brown, the most overrated of them all. Nearly no tactile feedback, but still not that quiet while doing so. At least blue has some feeling, but still not as much as I'd like. And black, I like $3 membrane boards more.
Compared to the ducky 1087xm with the new alps greens, it's not even a competition. Downside to the alps is that the switch actuates almost immediately, and that it's loud.
So, what should I do next ? Only real requirement is that it have a normal sized backspace. None of that bull**** giant L shaped enterkey with a one-width backspace.