I guess the bigger question is what do you mean by the interior?
Here's my 2 cents from a 2SS 1LE
1) Suede steering makes gripping so much more easy. Driven cars with leather steering and with the Faux Leather/Plastic and both of them tend to slip a little under aggressive driving.
2) Suede shifter knob. Nothing to compare to. Just like the steering, helps with the grip.
1/2 are hard, but also soft to touch. Wouldn't you need something hard to hold onto while steering and shifting. A floppy piece of styrofoam wouldn't work.
3) Recaro Seats: Vented and Heated on 2SS. I was a little concerned that the seats would be a little too tight for a 5'11 (Am I 6ft?) wide shouldered guy, but it fits well. Would have loved the option to adjust the side pads for a tighter/looser fit, but eh. Hasn't come into play yet.
4) 2 Cup holders: Come with Lighting Trim in the 2SS. Not sure on the 1SS. Good enough to hold 2 cups, I guess.
5) Sound System: 2SS comes with 9 speaker Bose System. I've heard a few complaints from people on here, but it's been great for me.
6) Warning Systems: Not interior, but something to help along the way are the Side Blind Zone and Rear cross traffic alerts. Very responsive and active and
IF you use your side mirrors, then the alert is pretty bright and you cannot miss.
7) Wireless Charging: Worst part of the car IMO. Not big enough to charge a phone with the wireless charging option, not small enough that you can ignore it. Waste of real estate.
Dashboard is bland, could use fuzzy dice to fizz it up a bit
. But then again, dash is supposed to be bland.