I've been looking into the world of mechanical keyboards, and damm I'm overwhelmed by the possibillities of configurations and products. Why is chosing a keyboard for the MacBook 12" which has only 1 usb-c so hard? Any advice on keyboards and keyswitches?

Just got my first mechanical keyboard (Corsair K95) and I have to say it's absolutely brilliant!
As for switches, the K95 has Cherry MX Reds, and they're a bit strange at first because they're linear (no bump in force), but you'd be best off finding a shop that has some and trying then all out 😊

Are you looking for a Bluetooth/wireless mechanical? Let me know if you find one!
Personally, I love the Razer range.

I have 60% and 65% layouts using cherry mx clear and topre both are amazing cherry mx has more options in terms of switches, keycaps and offers. For typists/programing go with blue/brown/clears/greens you can easily see the diference in this page http://keyboardco.com/blog/...
The 60% layout is very good for programing, minimal to no travel and very portable.

@ToshNeox cool! yeah you're right about trying it out, but finding a shop is harder than browsing the web. :D

@pyrotazz yes that would be nice. I consider to buy the matias laptop one, but it looks so ugly! Like a tool for handycaped people. And the bummer for me it's only aviable with US key layout and I have no idea if I can customize it myself.
http://matias.ca/laptoppro/mac/

Get a CODE keyboard - specifically designed for programmers and the nicest keyboard I have ever used.