Carb Guru Opinions Requested

I'm currently using a Street Demon 750 tuned to 4500 ft above see level.
So far I am extremely pleased with this carb. It's like a mashup between an AVS and a Thermoquad.
I get almost 18 mpg highway, running 70 mph at 2900 RPM (8-13 around town depending if I drive Mad Max or not)
And that's with a hopped up 1990's Roller cammed LA360 with 219/227 at .050 dur, .515/.530 lift Hyd cam (Lunati Voodoo) , SpeedPro pistons at 9.7 compression.
Behind (currently for now) is an A999 non lockup transmission.
Typically Vac. Secondary carbs are a little more street friendly especially behind an automatic transmission.