Which carb is for me?

[wildwood]

Hey guys, I just bought a real rusty 79 Blazer for $800. The thing has a recently rebiult SB 400 with headers, an RV cam, performance ignition system, riser intake manifold, and only 6000 kms on the engine! I noticed when driving the old rust bucket home that the throttle likes to stick. It has the factory 4 barral carb on it, I could get another one from the junk yard for real cheap. But I was thinking of getting something with a little better performance. I do off-road my truck and drive up steep hills while doing so. I really like the sounds of the Holley Truck Avenger carb. But not too many around for cheap. There is also a Holly 600, and an Edelbrock 750 for sale locally at $100 each. Do you guys think I'm best to shell out the big $$ for the truck avenger or would one of these carbs do just as well? Or should I just go find another stocker?