OK, I'll list my opinions of some of the more common switches. Not going to do all the ones I've tried so far, that would take way too long xD .
MX blue - 5/10
MX red - 2/10
MX black - 2/10
MX brown - 2/10
MX clear - 4/10
SKCM black - 6/10
SKCL green or linearised other Alps - 8/10
SKCM orange/salmon - 9/10
SKCM white - 8/10
SKCM blue - 10/10
MBS (M) - 8/10
CBS (F) - 10/10
Topre - 9/10
I don't like Cherry MX a lot. Blues are by far the best in the series, but their keyfeel is still not great and the sound is absolutely horrible, it's probably the worst-sounding switch I've heard to date. Blacks and reds are stratchy, boring, lifeless, and badly weighted, and overall some of the worst switches I've tried so far. MX brown is just awful in every way, I don't know what they were thinking when they thought this was a "tactile" switch.
Alps are great switches, but marred by a huge weakness - if they're not clean, they feel like crap. The figures I posted are assuming they're spotlessly clean (of course this goes for all entries). Blacks feel rather rough, but at least they have an actual tactile bump, and they're quite versatile. Linear Alps are THE linear switches go get IMO, with perfect weighting and extremely smooth keyfeel. Tactile Alps are possibly my favourite tactile switches. Clicky ones are the best-sounding clicky switches there are IMO.
Buckling springs are fantastic too. Membrane ones (M) are on par with white Alps in my opinion, although they're more robust and less vulnerable to dust. Capacitive ones are pretty much the ultimate typing switch IMO, they feel slightly better than blue Alps, but blue Alps sound better.
Topre is really nice too, I can see why people like these. Smooth, soft keyfeel with a proper, well-rounded tactility, these show that rubber domes can be great if done well. I wish I had a board with these with a normal size layout as unfortunately these tend to come in layouts and form factors that are very useless for me.