To me it's more about the shaft (weight, profile, etc.) Almost all CB designs have something to offer for preference (size, offset, etc.) and off the rack if you fit them for playing length, lie and heft are almost all the same. Is one so much better than others? For me no.
The most important factor to find is the shaft not the head as the shaft is harder to fit. And guessing off the rack is for golfers that like to keep changing equipment more than their underwear. ☺