We have a 6 day rental from LAX coming up in a few weeks. Initially we'd booked a Medium Luxury SUV (Cadillac XT5 or similar) from Hertz but I recently found a good deal on Extraordinary (BMW 5 series or similar which I believe is XCAR?) from Sixt and I don't know which to go for. For context, we are going to be on our annual visit to the US with our teenager son who really likes having "cool cars" during these trips so I really want to go with whichever company will have a better chance of delivering a good experience. I have been able to look up what the alternatives to Cadillac XT5 may be with Hertz but I can't find much on the worst case (or best case!) scenario cars with Sixt which makes it harder to choose. Any advice would be greatly appreciated.