I think it depends on which region you live in. I think Abercrombie is still very popular with the 15-25 demographic. Personally Im in to the gap because I have 50% discount. "Why pay more when you can pay less."

Quality men's fashion
 

Good preppy fashion, IMO, includes Ralph Lauren, although it's probably pricey for most college guys (I'm talking the upper-end stuff).

What do I like on men? Not clothes emblazoned with name brands, that's for sure. For casual clothes, anything that looks good--well-fitting jeans or chinos with a clean T-shirt or polo. On older men, I like to see Ralph Lauren (NOT Polo) or Brooks Brothers--nothing like a nice suit and well-fitting overcoat.

What do I like? Once again, no visible brand names. I think that's extremely tacky and nouveau-riche (or in most cases, no-riche). If you had to pin me down to a store, I guess it would either be Banana Republic--basic articles in a variety of colors. That's not to say I don't have a few trendy articles of clothing thrown in. I don't buy clothing that often, so when I do, I don't mind spending a lot of money on something because it is fashionable and durable--not because the store du jour's logo is on it.