I have recently acquired an Alex Martin Sidelock 12, with 30" barrels and 25" ribless barrels. It is two totally different guns - the 30" are very smooth and steady, but the 25" very fast handling and will be great for snap shooting at woodcock.

The one downside with 30" barrels is walking with them in the crook of your arm. I am 6ft and conscious the the barrels are getting a bit close to the ground. But they are so nice to shoot.