I've got several G-Shocks, from a 5600 to a Solar/Atomic Riseman. My favorite by far is my GW200-MS Frogman. It's solar but not atomic, but keeps time very accurately even without radio sync. The face is kind of offset from the band which may look odd at first, but it help it wear really well and it almost makes it seem smaller than it really is. The Frogman doesn't have a lot of the features that some of the newer ones have, but I like it and wear it normally ahead of even my Breitling and Seikos.
This particular model you'd have to find pre-owned, but I believe there are several updated (and with updated prices) Frogman models available retail.
http://www.amazon.com/Casio-GW200MS-.../dp/B001QFYDF6