That's a hard one, I am sucker for a all over tunable min 10 ply maple snare, it gives me warm fuzzies. Though in live metal and hard rock aluminium is very loud with a rimshot that will crack your head.
For me it really depends on what it is I am playing at the time.
I am interested in these at the moment...
http://www.music123.com/Yamaha-SD-64...-i227817.music