Coming from a high line Audi. What package is worth the money to have? S&S seems 100%. Leather is debatable. Drivers Assistance 1 is debatable. Thoughts? I can go cheap here and be out the door @ 25k with a preferred with S&S only. The other packages are bumping me to $27k. Seems like these can be had easily for 10k under MSRP right now.