As you already know, different hunters define a good grouse gun and [gauge(s)] differently. I had an SKB light 12 s x s and stupidly sold it, thinking I could find another somewhat locally. I picked up an SKB O/U 20 ga, 26" barrels and really like it. I have a Model 12, 20 ga (family heirloom) that is a pleasure to handle and carry. I have a NIB Benelli M2 20 ga that I'm undecided on keeping, but time will tell.
As was suggested above, it the Sterlingworth fit you the best, look for another s x s.
