There's a real difference, at least in my mind there is.
I am leaning more towards buying vintage or retro wear. The only reason I am not fully on board for vintage is because I think that I don't fit the typical vintage store sizes. Those tiny people whom I hate and love at the same time.
Indie however, is a trend that will pass eventually, so if I combine indie/vintage/retro then I think I'll be in good standing.