i've shot both the 3 blade 100's and 4 blade 100's as well as 4 blade 90 grain

so far i've killed deer with all three. . .i shoot a PSE 300gr radial x weave pro w/ a 2004 PSE Bruin bow topped with the lightning 3 cam.

i think either will work as long as u get a good clean shot, but even if ya don't get the shot of a lifetime, last year i hit a big buck with the 4 blade 90 gr and the 28" arrow sank straight through one sholderblade and punctured the other (all that was stickin out of his sholder was 4" of arrow with feathers) the buck locked up and hobbled off 200yds before i saw him drop, but that broadhead busted right through his sholder. . . my advice, either will kill. . . .