Casey 1988
Shun the frumious Bandersnatch!
Here are two Destroyers I had right beside me; the champ one has what I would dub "acceptable bubbles" doesn't seem to affect flight.
The purple G*, which to be fair is an F2, is definitely less stable and has tons of surface bubbles that I would not say are acceptable. Some stock runs have these that are not F2 and that is a mistake IMO.
How does that Champion Destroyer fly? I find the lower domed ones to be less power needing to get the flight you want unlike most Star Destroyers where you want the normal dome as the Star plastic takes a fair bit less power to get going then Champion.