Current owner of a 38mm Stainless Steel S0, and starting to get fed up of battery life/slowness. Really tempted by the battery longevity and processing power of the S3, and interested in going for the Sport over the Stainless Steel, primarily for cost reasons. My main concern is durability. Obviously the Ion-X glass of the Sport is softer than the sapphire on the SS, but I'm interested to see if this is noticeable (or indeed if it is something you even think about) in every day use. Have you switched from SS to Aluminium? Which did you prefer? How much more/less durable are you finding the aluminium watch body? Was the reduction in cost worth it?