Full disclosure I have no experience with the Q Drum seamless Copper snare.
Bermuda tipped me off last year on the 8" X 14" Black Beauty snare for gigging. I never gave much thought to ever owning a Black Beauty but after picking up one in the 8" depth, I've got to say if you're only going to own one Black Beauty for general playing, go for the 8 incher. It sounds like the 6-1/2" deep Black Beauty but with fuller body.
REALLY liking that Sounds phenominal.I have the Q gentlemen’s 7x14 seamless copper and it is an extraordinary drum. Better built with superior components to the BB in my opinion. Copper will be closer to bronze than brass in most cases but if I’ve learned anything over the years, it’s that not all drums follow expectations for their type.