I just got back from the Apple Store... here are my initial impressions from trying on the models! (For reference, my wrist is 170mm) 42mm Space Grey Sport w/Black Band I was super impressed by how lightweight the Sport model felt. The space grey looked very sleek, loved the look of the all black! It was unfortunate that the try-on models were running the demo loops instead of being fully functional, but that's alright. The haptic feedback was nice on the watch. The sport band was very soft, yet seemed extremely durable. 42mm Stainless Steel w/Milanese Loop When I put on the SS watch, I immediately was put off by how heavy it felt on my wrist. I'm personally not a fan of heavier watches, and this felt a bit too heavy for my likings. The finish is extremely nice. The most impressive part, however, was the Milanese loop. The mesh was so so so so so so soft and flexible. Loved this band. I also really liked the magnetic clamp on it. It wasn't too too strong, but it was strong enough to let you know it wasn't going anywhere. 42mm Space Grey Sport w/Milanese Loop Was on the fence before trying it on, but the band itself convinced me to get one. I actually like the contrast in the finishes, but I may be in the minority in that category I've attached pics of it. Overall, I think the Apple Watch is awesome. Very glad I ordered one last night (this morning).