It depends on where you live, how much you want to spend, and what sort of fit you're looking for. Barneys will have a selection of mid-range denim -- brands like APC and Naked & Famous. If you're in SF, NYC, or LA, there's Self Edge, which specializes in higher end, more obscure stuff but still carries great value brands like 3Sixteen. Also in NYC is Blue In Green, which carries a ton of stuff. You can always look at Revolve Clothing or Context Clothing online as well. There are tons of options, there are many local boutique places that will carry good brands, and it gets deep really quick. Let me know if you have any questions.