wear what you like, have confidence in it...i can tell you to come shopping with me at Hugo Boss or Holt Ren...will spending that kinda of money get you ladies? highly unlikely if its something your not comfortable in...
any lady on this board will agree that they can tell when a person is confident in their clothes...you can see me in a power suit, in med scrubs, in Ed Hardy gear with a pair of True Religion jeans...in any way its about what I like...
if you want some reasonable places, HnM is okay, FCUK/Zara are decent too..but regardless, find what you like and the rest will come naturally...