I'm about to confirm my order on a Grey S85 with the following: Pano, Black Perf Leather Seats, Fog lamps, obeche wood gloss, parking sensors, rear facing seats, air suspension, subzero weather, tech package. I'm 90% sure this is the config I want, but I have this nagging feeling that I should also include the extended leather. I haven't been able to a compare two cars side by side with and without this option so its been hard to decide. $2500 seems like a lot to spend on something I may not even notice, but if it really changes the "feel" of the interior, then maybe it's worth it. Any advice? Has anyone actually sat side by side with and without this option? What do you notice? Is it worth it? Thanks!