I'll go against the grain, I'm not a fan of Ariats. I love my Ariat field boots for english but haven't had good luck with western boots. They don't seem to hold up - I'm rough on boots.
I agree with AC, smooth leather or crepe soles. Ditto on getting them a hair big, I go a 1/2 size big. I wear ropers or pull ons for working at home so should I get caught in a stirrup they will come off.
My hands down favorite maker is Olathe. Also have a pair of Tony Lama's that have held up fairly well for daily work.
Life is like a camera. Focus on what's important, Capture the good times, Develop from the negatives and if things don't work out, Take another shot.