We have owned the 450+ for 6 months (took 6 mos to get) and love it. Beautifully finished, extraordinarily comfortable - the luxury sedan we wanted. Traded in our Lexus LS which was 10 years old (and had 25,000 miles!) as we wanted electric and Lexus wasn't ready.
UPDATE: This is our “city” car and we don’t put many miles on it - 5000 a year. We keep the car for at least 8 years so … we decided we might as well take the leap to electric. We are well past retirement age. We installed a charger in our garage and it is a convenient breeze to charge which, for us, is only once a month or so. Our last two cars were LS lexus. We wanted luxury and have gotten it in spades. It is a beautiful car to drive (even back wheels turn making u turns easy). Outside of the fact it is almost like driving a computer, we love it. It is, obviously, so quiet and refined. The “heads up” feature is great and very graphic. There have been 0 problems in the over a year we have had it.
OK, another year has gone by and the car has been flawless. Zero problems - still love it.