Vince,
My Daisy 953 has the black (sorta grey actually) Synthetic Stock, and with the relativelly high weight of the metal components, steel bbl, and Muzzle weight, the weight reduction over wood really isn't noticable! Infact once I mounter the Sportsman A/O 4X, Metal Sight Rings, anda thick Brass trigger shoe, I doubt any real weight reduction is noticable on the little target gun!
I had a trio of Crosman 795's, which also had Synthetic Factory stocks, but the same thing happened there. The metal reciever and it's Springer powerplant really added some weight to the rifles!
I like the looks of them on certain guns, but am a traditionalist and actually prefer wood on most of my rifles.
He-He what really looks ODD is to see a Winchester Model 94 30-30 with the synthetic butt and forestocks!
I really would like to try both the diana and that New Gamo 640 though, just to see how they'd shoot?
ZVP