Shotgunlover, a sleeved Purdey may have started life as a best, but it's no longer a best once it's been sleeved. New set of barrels from Purdey . . . then it's still a best.

And while there can be debate on triggerplate actions and the "best" designation, I don't think there is where boxlocks in general are concerned. That's why they're usually qualified with the "best boxlock" designation.