Tokio7, 7th st btw 1st+2nd Ave
Amarcord, Lafayette btw spring and prince
Both of those are al little less mainsteream than Diesel, TR... You will find MMM, Marc Jacobs, Gucci, Dior, Rogan...
Big TJMaxx/Overstock type store:
Century 21 on Commerce street WTC location.
They will have diesel and everything you can think of, place is huge, make sure to set aside a few hours!