750 or 850 cfm Thermoquad

I've got one of each. My question is, in pursuit of the best throttle response as possible, is there a noticeable difference between the 750 cfm 360 tq with the small 1 3/8 primaries and the 850 cfm tq off of a 400 with the 1 1/2 primaries. I'm thinking that the 750 will be plenty enough carb for my mild 360 Magnum and hope that it will have noticeably more and crisper throttle response. What do you think???