*newbie alert* (aka- dont crush my spirit)
what is "tactical"? if it is what looks better when wearing a blackhawk vest with your limited edition rambo knife, then i'd vote for weaver, as that is definitely the more martial-arty of the two stances. if the real meaning of "tactical" is what most effectively gets rounds on target, quicker and more accurately, then i'd have to change my vote. the body armor issue doesn't really prevent mod-iso, but encourages it. straight up iso is arms locked out, which you can't do with a full body armor setup with plates, so you become mod-iso by default. the big disadvantage of weaver seems to be recoil management with rapid-multiple shots, and shooting on the move. and you can make a mod-iso stance universal for all weapons platforms- not just pistol. the whole police-video thing should stop this argument cold. for a more local example, i like to point out how good shooters shoot on the move and transition from target to target.