Your best bet is this one........Yamaha Brass Standard (14x6,5). I have never used copper so I can not give a review.
Bronze is a little warmer than Brass. The Pearl Sensitone would be my next choice, I had a ferrone signature snare and was not knocked out about it. it's nice looking, black on brass, tube lugs but I think for the money the Yamaha would be a btter choice.