I'll admit some angst in going through the delivery process.
My car was built in late December - was worried about all of the messages on the forums from people who'd had problems with December builds.
Was concerned about sending a large check to Tesla for my car, without seeing my car, before they would load it on the transport.
And then when I heard the transport hit a deer in West Texas and was delayed - I was very apprehensive about what I would find when the car got here.
When it rolled off the truck, the car was dirty - the driver apologized and said all of the Model S's on his truck were in the same condition, because he loaded while it was raining and the cars weren't clean when he got them. Tesla had already warned me about this before delivery - and had already made arrangements to get the car fully detailed immediately after delivery.
Once I got the car, I had an 8 page checklist I used to methodically go through every electrical, mechanical and finish aspect of the car.
Other than a few minor problems (missing the rear trunk well cover), I didn't find anything major wrong with the car - and nothing that needed to be addressed immediately - just a very small number of minor issues to look at when the local service team gets the "due bill items" (like the CF spoiler).
A major problem with the forums is that a very small number of people can make it seem like there are major problems with the cars. But if many people were having serious problems, wouldn't we be seeing a lot of "piling on" when a problem was reported?
There are some quirks with the software - which they'll fix - and I'm adjusting my usage to avoid some of the issues (raise the seat to minimize the windshield distortion, being more careful in entering/exiting the drivers seat to avoid wear on the post - which, by the way, I had the same problem with the LS 460 I just sold, ...).
Now that I am through the delivery process, and I've been driving the car for the last 10 days - I have absolutely no regrets. It is a fantastic car - and the angst during the delivery process is already a fading memory...