The new one looks to be technically good but with slightly poorer styling. Overall the reduced weight and increased power is a nice "plus and I'd still like to have one if my old one was written off.
I bought my Miata MX5 new in 2000.
It's been a truly outstanding car requiring very little care.
I have 110,00 miles on it with plenty of track time included (my GPS recorded over 125 mph at a track day at nearby Pocono Raceway a few years ago).