Are you running the 1bbl or 2bbl intake manifold? My all-around favorite would have to be a Holley 2300 for simplicity, downright reliability, and easy tunability. I run the progressive Weber 34/34 on my CJ and it gets much better fuel economy than any other 2bbl, and still has some umph. IMO, the Holley is simpler and easier to tune than the Weber. The Weber 32/36, and Holley 5200 (basically a Weber 32/36 clone manufactured by Holley) are also both great carburetors and are very fuel efficient, being progressive 2bbls.
My CJ sees a lot of on-road driving, so fuel economy is pretty important to me. That's why I run a progressive Weber on there. If I was more into tuning it and getting the most performance I'd have a Holley 2300 on there.
1986 Jeep CJ7 4.2L I6 T176 (restoration in progress)
1961 Willys 4x4 Wagon L-226 I6 T90 (restoration also in progress)