When I was in school the k70 with cherry browns was my first mechanical keyboard. That being said, I'm not sure if it was really a good fit for me. I don't ever use a numpad, but I use dedicated arrow keys a lot. As for switches, I love a good tactile bump but high pitched clicks really get under my skin. So.. TKL (or smaller) with tactile switches are my preference. I reiterate... my preference.
I would look, in detail, at what you do or don't like. Like... down to the individual keys. It's all preference. See if you can test various boards in person, or try to get a switch tester if you can't. Keep it simple though and look at switches and layout.. not caps or leds.