I think about the calculus that I would do if I was buying a new EV and the dealer said... "how much battery do you want ? It's $X/mile range."
If I could buy as much as I wanted, I don't think I'd buy much over 100 miles, 150 max. Especially if I had the REX. Now, without that, I still think 150 miles would be good enough. I live in Houston, and there is no CCS on the way to Austin, Dallas, or San Antonio. If there was, and I expect there to be some in the next 3 years, then I figure that I'd be good with 150 miles. At some point, its just extra weight that you tote around and never use. e.g., I explain it as .... "would you want a 200 gallon gas tank in your corrolla ?" Think about how far you would tote that last 10 gallons that you'd never, ever, use."
I DID buy a 2015 Rex I3 for $21k, with 13,000 miles and all the goodies. I love it, and it now has almost 19,000 miles on it, since October. Only 4 gallons of gas burned so far.
2015 I3 Rex SIlver
Giga, tech, parking, harmon Kardon
Sugar Land, TX
about 19,000 miles.
Driven 4,000 miles and have used less than 4 gals.