Please try to refrain from asking these types of questions. You will pretty much always get the same answer: The "best" is whichever one you like the best. It's completely subjective opinion.
If what you want is to collect others' opinions of their favorite switch, keyboard, brand, mouse, whatever, then please ask "What's your favorite [item]" instead.
Using the phrase "What's the best ..." opens the door for all sorts of assertive and combative arguments, and while we here at GeekHack are for the vast majority of the time a very cheery and helpful bunch, we have on occasion been known to derail such threads into pointless debates where each side is just yelling that what they believe is right, and the others are wrong.
And nobody likes that. So let's all do our part in keeping GeekHack nice and friendly, where we can all share our mutual love for all things keyboards.