Bill,
The barrels on the two Browning BSS-SL's are 26", and because of shoulder surgery I shoot their short barrels well. My three Merkels are 28" but are balanced somewhat neutral allowing me to do well with them also.
I don't know how the side safeties handle, but I've always liked how the side panels of the Greeners looked especially opposite the safety. The carved fences and engraving on the Kettner is stunning. That would be the star at any SxS hammer event!
Karl