Get the 26 inch. The receiver is 2 1/4 inches longer and also wider top to bottom than a regular 391. Shooting out of a pit or blind the 26 will be easier. Pheasants will be just fine and the turkeys you can even go shorter. Mine is a 24 incher and it does just fine. The sighting plane of a 26 in bbl will look the same as a 28 inch bbl and you'll be able to swing a little easier. BTW my Extrema shoots 1 ounce target loads. Think you'll like it.
Fabs BPS has the SBE II in black and camo with the comfort tech stock for a sale price and they even give ya a case of shells with the gun. I got one tonight in black and will be doing a test on it that I will print up in Scatterguns. Check 'em out Fabs. Going Going ....G...
BTW...get their in house credit card and they'll give ya 10% off. Not the Bass Pro card...an in house credit card just for that store.
As a Post script. If there are any firefighters here on board.. In at least the Baltimore BPS they will give firefighters a 10% discount till the end of October. Other areas check with your local Bass Pro Shops. Have to show your badge or Fire Dept ID.. At least that is what I was told by one of the people who should know.