Metallic and bright is GS all over isn't it? I'm not really drawn to them as a whole, haven't tried on to be fair but have seen them in Harrods. The SBGW231 and the green dial GMT are the ones I like the look of most. Not a fan of the other alternative, can't remember the model but not keen on the blued second hand.
Feel that the SBGW231 really reflects their history, so well balanced, timeless. Haven't seen it in real life either though. That teal is looking really strong though! I know you've tried quite a few on but the cases always seem relatively wide and bulky to me??