Thanks DHAST. I think I will be making UA MP my primary program for the reasons you said. Plus I may be on LCC a fair bit and I credit those miles to UA as well.

Also, I used to be a UA employee (and was even based at IAD, like you were with UAX). It will be fun to go from whiny, self-entitled airline employee to whiny, self-entitled FFer and run into my old co-workers!