I wouldn't go with anything but an MSD myself, but if I had to choose one of the two you're deciding on, I'd go with Jacobs. Holley stuff just seems to be of such chinsey quality these days, I tend to steer clear whenever possible. Need a for-instance? BLOWtech: a Holley company, NOS: a Holley company, and Holley's own SysteMAX intakes look like they were cast by a high school student. Dirty, cheap, and overpriced in my book.
Again, these are just MY opinions, and if anybody doesn't like them, you know what to do.
