Had 2 56TH's go through me. Nicer looking stocks but I can't say I care about how nice something looks. I want accuracy, build quality, dependability, ability to shoot any decent pellets with slight zeroing. A tuned 54 is all I could hope for. Again, I agree the stock is a much finer looking design. I don't have the specs but I remember the 56's seeming heavier.
I'm actually very content with a plain Jane 48, and I definitely miss my tuned 54 .22 I said it last night, I'd trade 3 PCPs a tank & the Hill for one or 2 good spring guns at this point.