Preferred carburetor for mild 360?

I run a 600 cfm Carter AFB on my Challenger. I had a 625 cfm Carter on it before that. I also set up my g/f's '55 Coronet (270 ci V8 ) with a 500 cfm Edelbrock, brand new out of the box. They're easy to tune, and seem to hold up just fine. I haven't touched the 600 Carter on my Challenger in well over a year. Now that I've had a couple of them apart, I feel pretty comfortable setting them up and tuning them.

Holley's are good carbs too though, you shouldn't have any trouble finding a holley (or several) that will work for you. I have a 770 Street Avenger for my built up 340 when I get it into my Challenger, I'm sure I'll have to spend some time figuring that one out too.

There are advantages and disadvantages for both of them. It really comes down to what you know, and what you like to work on better. If you're going to keep taking it to the same engine guy, find out which one he likes better. Otherwise, pick which one you want to work on and spend some time figuring it out.

As far as a rough idle goes, A LOT of things could cause that. While it definitely could be the carburator, it could also be the timing, or for that matter ANY part of the ignition system. I usually suspect ignition before I suspect the carb.

Also, if the car sat, the gas in the tank is probably junk. It might run on it, but it won't run well until you've run a few tanks of fresh stuff through it. If you haven't done that yet, I'd hold off on doing much of anything in the way of tuning until all the old fuel is long gone.