I should qualify my answer. I use a continental grip for hitting BH slice and something close to a standard Eastern BH grip for hitting topspin. I should have selected Conti for the poll since I hit a lot more slice BH shots than topspin shots with the 1-hander. (Will sometimes use 2 hands to hit a topspin shot).
Every tool is a weapon -- if you hold it right. (~Ani DiFranco)