Man I like both, but Iam becoming more LS biased, for instance we have two burb's, one a 99 2wd. with vortec 350 with 12,000 miles on new motor it also has a hypercrap, electic fans, injector mod,cai, etc, and it has 3.73's with stock size tires, The second burb is a bone stock 02 2wd with a 5.3 but it was 300 hp stock for that year it also has 3.73's and stock size tires. They are both big and heavy, but with that said, the 02 in stock tune will run off and leave the 99 any time any place, rev's better, pull's harder, just does everything better, it also get's better gas mileage. Now I don't like the nbs but I sure as hell like their engine's, and someday when I have to replace the 350 in the 99 I will drop it in a lake as a boat anchor and put a 5.3 in it's place. Anyway that's just my 2 cent's.