Supershuttle is worse. I've had them no-show me more than 25% of time.

the worst part of my layovers are LAX driving in traffic for 1 hour each way on a 13:30 hour layover. giving me barely 11 hours at hotel.
As long as the quality of hotels....marriott, sheraton, doubletree, hilton, don't change, I don't care where I stay. I'd rather be 10 minutes from airport than 45-1 hour. If I REALLY wanna go party downtown....I'll uber.

Also 18 hour layover doesn't include duty out and duty in. so minus 1.5 hours. 15:30 is actual layover. Most airlines do 16 hour layover (duty out-duty in) is long layover hotel