I think at the end of the day it comes down to where you feel most comfortable at. A lot of people I know who built hours in the US went on and on about it being controlled and how they'll be prepared for airline world. Load of crap, we all hold an RT license. I actually think it's harder flying into somewhere uncontrolled because you have to be very vigilant with a good situational awareness and you aren't being told what to do.
Who knows, who cares.
Never heard of an interview question of whether you trained at a controlled field or not, doesn't come up in ATPL exams or the medical - believe it or not!!!! Am still yet to here from a recruiter "yes well those pilots who trained at a controlled airfield make such better pilots, fantastic to hire".
As for the receptionists, I think they're a lovely bunch!