I know this is purely speculation, but which size should i get: 38 or 42, if I have the Pebble now? I find the Pebble to be just fine on my wrist, very comfortable and fits fine. I believe the Pebble is 51mm. But there are those little "arms" that connect the band to the watch. So, do you think I should go for the 42mm? I want to know so I can preorder it right when it comes out, I wont be waiting to test them out in store.