My Honda S2000 (MY04) came with RE750s. And I put S03s on my Supra TT 2 years ago.

The RE750s are quieter than the S03s. I can't comment on treadlife since the Honda has 1600 miles and I only do 4000 miles/year or so on the Supra.

The S03s may be sharper on turn in, however the cars are pretty different. Rides is ok on both, maybe a little better with the RE750s.

I believe the RE750s have steel belts, and the S03 have fabic belt that is more prone to flat spotting when resting for a while.

So, my guess is the RE750 would be a better match for a typical MB sedan.

But what about the G009?