I don't mind brands/logos but it's a double-edged sword. It's hard to like or want to wear something that's perceived to be in decline if there are logos/branding all over it. Gap, Superdry, Hollister all seem a bit passé to me. I still buy Gap, but never with the logo on it.
Uniqlo seem fairly on the ball. The single length trouser size is very astute, although problematic for me as I live outside of London. Basically, I don't bother to buy trousers from them as they will never fit. T-shirts and sweatshirts are fine though!