I ran a box stock 9375 dom on my CJ 514 and it worked perfect after just a little tuning. I built my A head 557 and bought a carb from Pro-Systems and it has worked flawless. All I had to do was pull 2 numbers of jet out of it.
It just depends on what your goal is. A stock Dom can be just as consistant as any carb out there. If you want max HP a custom carb may be best. Really depends on your combo.