Annular vs downleg boosters on carb

B3422w5 said
Considering a new carb. AED
The place i am looking at doing one can give me the “ look” i want( black carb, red boosters and metering blocks.
I figured on a 950.
They recommend an 850 with annular boosters. I know an 850 is generally “ bigger” than a 950. He said the 850 if he uses annular boosters will give me the signal i want.

They do is they say they can add some crispness to a single plane setup as well.
They are bigger and they take up room so if it really is an 850 it probably really isn't an 850 after those boosters went in was what all used to think because If remember right the 830 was an example of it