Got mine yesterday.
I'm coming from a LandRover Discovery (comparable price). The Tesla really is in a different league, albeit with fewer seats. I'd be very worried if I was JLR. I also appreciated the complete lack of hassle and upselling during the vehicle handover (again, compared with LandRover). Although they were a day late, it was otherwise a very pleasant and professional experience.
Almost everything is an improvement on other cars I've been in. The responsiveness, the smoothness, the seats, the music system, the GPS, the air-con, the boot-space (given size of car).
It's not perfect though. I can see myself abandoning the AutoPiliot once the novelty wears off. It just isn't good enough yet. Also, and less forgivably, the auto high-beams just don't seem to work properly at all. I was driving in pitch black country lanes, and it kept auto-switching them off for no reason. Also, one department where another manufacturer is way ahead of Tesla is Toyota with their birds-eye-view parking system. Nowhere near as good in the Tesla.