I would avoid Renton, aside from the highlands, it's very very "ghetto" in terms of quality, the roads planning looks like someone fed spaghetti and exlax to their dog, had it crap on drafting paper and said "hah, there's your roadplan!"
seriously wtf is this?
I dunno I lived there for 3 months or so, hated every day of it. Would much rather live on the north end of the commute in to Seattle instead of coming from the south, the only exception being Federal Way, They've got a bus that runs right out of FW in to Seattle and back anyway. The less ramps to where you have to get, the better.