I agree with the above...and it is true that everyone seems in this day to over think and analyze everything. I myself was/is guilty of that.
Speaking from the thick of it all, residency is difficult, it's a lot of time, and during whatever free time you have.. you want to be able to be happy. If that means spending time with your family, playing out in a field, or hitting up the meat packing district in nyc, etc. etc. the most important place to be is where you can do that.
Sure, residency reputation, training, etc. etc. is very important, but at the end of the day, what you put into it is what you get out, and the truth is, it's hard to gauge what is going on when you do the interviews.. I can tell you having interviewed at various places twice you definitely get varying opinions about the program. I felt differently about the program I am at now the second time I interviewed.. go figure. It's all biased.
I learned from one of my away rotations that although I loved the program, the people, etc. that it wasn't a fit for me.. go figure.
The regional bias is based purely on how well a program knows you. If you seemed interested and are going beyond 'checking the box' at the interview, having communication, doing aways, visiting weeks, etc. etc.. that will allow you to be known by the program.
The best strategy you can implore is to do the best on any rotation, and make sure you present a positive, enthusiastic attitude. With that said, I would choose an away based on 1. location, and 2. a program that you are really interested in.. Then do your best...That's pretty much it.
-iliiz.