MI.sabot, I own a ringneck in 20 gauge as I'm not fond of double triggeres, like Graybeard I've used a single all my life and am just to used to them. As far as the barrel selection, I bought my first double way back when, a Savage Fox BSE, 12guage 26" barrels, then a Ithaca/SKB 20 guage 28" barrels, Then a Ruger Red Label 12gauge, 26" barrels, and finally a ringneck 20 gauge 28"bbl. all but one didn't have screw in chokes (the CZ). Barrel selection was a moot point and never concidered, ever, you just took the more open choke first. After all, we're hunting rabbits here, cedar swamps and fenceline's and woodlots, oh my.
With, the occasional grouse, woodcock, and used to be Hungarian partridge or pheasent, excuse me a moment, while I wipe a tear....................and every now and then a squirrel, at least in N.E. Wis. I like the 28" barrel length better, ecspecially on the smaller frame of the CZ. The Ruger is quite a bit heavier so is not affected by a "to light" feeling of front. You can actually see the difference in the sighting plane, (being a bit better with the longer barrel) I know it's only 2" but it's there. So in my opinion you would be better served with the 28" barrel, and thats coming from a guy who's changed his opinion. I used to think a 26" barrel was a better handler until I really started to compare. In pulling up on a rabbit, or getting the S*^t scared out of you by a grouse, slide that safety forward and trip the sear and if you need a second shot for a second animal/bird, of course, you won't have to think about moving the hand or where the trigger is, because it's right there. Good luck CRASH87