I really am a fan of my Bombay white label. Not too much into the sapphire for some reason. My everyday drink is martini rocks, no olives, dry as the Sahara and it goes down just so well.
I have tried some of the others: Hendricks on down to Gordons. The taste profile of the Bombay white just works.
The Tanqerays are really only drinkable when paired with the overpowering quinine in tonics.