I used to play AD&D 3.5. I have looked at the 4th edition stuff and frankly it sucks balls. Besides, I really like the artwork in the hardback books and the look/texture of their covers etc. Lot of work has gone into them, which clearly shows.
I did also play Shadowrun a couple of times, and I remember one time I got my hands on a minigun and shot up a mall, and ended up having my character knocked out by my fellow players to prevent a massacre. It was funny though.