With all the talk of the stainless steel getting scratched easily and the sapphire screen being inferior to clarity than the ION-X glass:
 
http://www.engadget.com/2015/04/27/apple-watch-display-comparison/ 
I am glad I got the Sport!
Yes, you can just buff the scratches on the stainless steel but by doing this a lot, you can actually buff away the coating and will eventually see the actual steel under there if you're not careful.  The aluminum on my Sport got in contact with steel a couple of times, but it didn't get affected a bit...no mark of any sort was left.  My ION-X glass is still pristine with no visible nor difficult to see/'only seen when angled' scratches.  Of course, I am being careful but not overly paranoid.
I think us 'Sports' owners got our money's worth it.  And no, I'm not justifying my choice, I just don't want to do extra effort to keep my watch look brand new...just blow on it and slightly wipe it before going to bed.