Since the LPL has only had 1 week of play, I'll omit them from my discussion.
In general for S7, the top lane is like a "make or break" role for teams alongside the jungle. Despite it being early, there are only a few top laners that have really stood out among the rest. And frankly, it's a pretty small list.
For Korea, it'd be criminal not to say Huni (unless he falls apart in a few hours vs MVP). Under my radar however also from Korea is Crazy from BBQ Olivers. I would say Smeb but I haven't been impressed enough with his performance in tandem with the rest of the team despite still being undefeated in series.
For Europe, probably only one top laner comes to mind: Alphari from Misfits. Every other top laner so far has been generally average or lack luster; nothing too outstanding right now not based off of enemy blunder.
Taiwan's LMS as far as I've watched has had two relatively decent top laners so far in MapleSnow of HKES and MMD of FW. Chances I may need to tune in further into some HKES games after watching their two series.
North America, after week 1, I'd say Ssumday, Lourlo and Impact in a 3-way debate which Impact would've won and probably nobody else. Now I'm replacing Ssumday with Hauntzer and completely removing Lourlo. In other words, Impact is the only one being consistent with results.
So for me, once again not touching on LPL, that's Huni, Crazy, Alphari, MapleSnow, MMD, and Impact. Of those 6 it's probably contest between Huni, Crazy, and Impact.