I have a CZ Bobwhite .410 and 20 ga in the safe. Had a 28 ga BW but sold it. The 20 ga is a bit "chunky" (6.75#s if memory serves me correctly...28" barrels) but mine is well regulated (shoots to the same point of impact for both barrels) and the choke system is great. I bought it used for $300 (steal!) and the previous owner had trigger work done so is great in that department. I prefer AYA #2 round body and Grulla round body sidelock 20s to carry, they are more refined, but many more $$$. I shoot the CZZ Bobwhite as well as the side-locks I mentioned, just don't like to carry it as well.
As per the .410....it is a wonderful handling little wand that breaks skeet and sporting clays targets well beyond its 1/2 ounce pipsqueak reputation. I never like the 28 ga with 26" barrels as well, just never shot it as well as the .410 or 20 ga Bobwhites. I've never had any malfunctions with the CZ Bobwhites, which is more than I can say for AYA single trigger box-locks or Ugartecha box-locks. Certainly the twin trigger guns (CZ Bobwhite) are more reliable in the economy class of doubles in my experience.