You are azn? You will either buy name brand stuff from Macys, Lord&Taylors, Nordstroms, Bloomies, etcetc OR you will buy exclusively from Banana Republic.
Personally, I found a few name brands that had fit models that had the same kinda body type as me. That meant that all my clothes would always fit well and look good so long as they didn't change to tailor to fatties. I like DKNY, Kenneth Cole, Perry Ellis. But most of my everyday stuff is from the Gap. Gap is friggin CHEEP... same prices as Old Navy but their quality is better.
If you're "bulky" and Express didn't work out... well, it's going to be harder for you. You may wanna try out some more Polo, Tommy Hilfiger, and mebbe Nautica. I know some guys that are bulky-ish and they like the way those brands fit. Personally, I think Ralph Lauren Polo sucks... but my fashion sense is more toward "hip"