I have several of the 610s, 4" and 6", Ruger Blackhawks 6 1/2" 10mm / 38-40 convertables, and the Glocks. All shoot really well! However, the capacity issue always seems to come up, 6 vs. 9 to 16 rounds. Well for hunting, 6 is plenty! For self defense, more than 6, well if you need more than that you're in the $hitter! No experience with Delta, Bren, or EAA guns.
Doc