Annular vs downleg boosters on carb

kinda what AED said.
That all said.... i can get that “ look” i wanted by the new color scheme holley “ race brawler” 850 has, and lots cheaper.
They now come black with red metering blocks. Not sure how good of race carb it is, and it comes with downlegs.

https://www.opgi.com/air-fuel-deliv...MI_IPb8b7I7AIVN_fjBx2SJgZNEAQYBiABEgIhqPD_BwE

any thoughts Dwayne, with what i am doing?
Gonna keep my 950 that is known good just to be safe
OK why would you want to replace a "known good" carb?