I like the Air Gap intake.
One thing that is nice about them that you don't ever hear is that you can reach the screw to adjust the secondary idle setting on Holley carbs.
There are two things I don't like about them. When they come from the factory the intake bolts are hard to get to. There were a few areas that I had to grind back so that my socket would fit over the bolt head. That was easy to fix.
Overall they are nice intakes. I would either run them for mild to heavy performance on the street. If you are looking for an unstreetably fast street car, go with the Vicotr Jr.
I have no experience with the Weiand street manifolds. I did run the Weiand high rise tunnel ram. It was a little too much for the street, but it I liked it.