That's exactly the combination I have, and I recognise your experience with them. They are excellent for the car.
I haven't been troubled by the difference either, even though the character of these two tyres is quite different. The pattern is, of course, but honestly I don't think patterns make that much difference (as long as they are there and the grooves are deep enough). No, the real difference comes from the stiffness of the carcass, where the S-drive is far stiffer than on the C, and actually more so than the lower profile means.
This means that the rear is given a bit more lateral softness than the front, and I beleive I can feel that difference in fast corners, but it's nothing to worry about. On the front, the stiff carcass means that there can be quite a bit of rattle in the steering wheel on rough roads, and more so, of course, when the car has been standing still for some days and the tyres has a flat spot. But I personally find myself more confident in the handling when I have a good feeling of what the tyres are sticking to, and the flat spots are quickly cleared once they heat up a bit.
So for a 14" combination, I feel they are the best choice available. Choises are better for 15" tyres, and as far as I remember, I think both the front and rears would be available in S-drive for the corresponding sizes (195 front and 205 rear).
- Anders
PS: From your photos, I imagine that the shocks are next on the list?