Lots of variety posted, which is always a good read.
I really enjoy the MMR/MM ramps. Very smooth and look great; they can take a lot of speed too. And the callouts with them are memorable; the jackpot callouts in multiball are very enthusiastic, especially "super jackpot". Cracks me up right now.
And I also really enjoy the TWD LE/Prem ramps. My favorite machine and the ramps are part of it; both TWD ramps have so many nuances to them. I love that the ramps disappear into the back cabinet, and it makes it especially entertaining to watch the slow shots that may or may not make it to the loop point, and estimate position when unseen. Both ramps are somewhat aggressively pitched, so weaker shots are rejected and those rejects are very dangerous potential STDM returns. Also, both ramps are smooth to a certain speed, but notably fast shots can get chaotically rejected back onto the playfield (wild airballs), even more so on the right ramp than the oft quoted left ramp. Both TWD ramps default return to the opposite flipper so repeat 'combo' ramp shots are possible, as well as satisfying. Both ramps have two potential paths as well. Just lots of character and nuances to the TWD Prem/LE ramps, all of which are important to game play.