This blue one I was holding was a favorite of mine because not only was it glass, but it had a blue liquid inside. Very cool looking til one day it broke inside my luggage. What a mess.
The other two are my latest additions. The gun is very heavy. Does not feel that great with vigorous action (as ~ZE~ says) but does look kind of cool don't you think? That's a pricetag on the one with the heart handle. Both are on a mousepad to give you an idea of size.