Side view, S-Line Blades:

Back door S-Line Blades:

Back door S4 Blades:

Blades on the floor (dirty ones are S-Line):

Side shot (S4 blades):

In review, they are a bit more pronounced and have a different shape (more bulk on the bottom rather than the center) than the S-Line blades. I didn't take many pics of the front blades because, honestly, the rear ones seem to be the big difference. The front blades do bulge at the bottom rather than the center but aren't much different other than that. I think it would take an enthusiast to notice the difference but I personally love them, to each his own.
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