martins field are basiclly a lil' thicker compared to those cheap protectors. Im personally using martins field for my W810 and also PSP. I must say these are the best you can get! No other screen protectors win over them. The clarity and durability is amazing from my experience. I've used those cheap rm10 screen proc b4 and they simply wears of after 1month+ of use...

Martins fields are washable and reusable. This mean you can wash and reapply no matter how many times. It uses static to stick itself... NOT GLUE

try not to think inside the box by just reading others' review, get both phones, and make your own review by doing side by side comparison.

design wise, i would say, most of them prefer 903sh's design, it's way more cooler than k800's plain candybar, however judging a design is kinda subjective as it depends on people's perception thus i wouldn't wanna argue much on it
perhaps it's because you never had a chance to own it before
I got myself 3x of 903sh(Black Limited Edition), each set comes with 3x extra battery and i got alot more other accs e.g. desktop charger, silicon housing etc. It depends on whether you know or not how to get em.
Well, obviously that shows that you are easily satisfied