I never found ABF to be strong but to each his own.

GQ BurPer Kake was the first tobacco to kind of put me in "you better have a seat behind you because you're falling back now" mode.

C&D Burley Flake #3 has a sneaky nicotine hit that comes up on you through the smoke.

Some honorable mentions are 1792, Irish Flake, Old Joe Krantz and Five Brothers