I've had a 14-50 from the beginning, and I'm now planning upgrading to an HPWC. But not because of the overnight charge time (for that the 14-50 is more than fast enough, even if I drive it to empty).
The problem is that I like to generally keep the battery charged at 80% (200 miles). But sometimes I want to go somewhere far on a whim.So if I need a range charge, I need 2.5 hours notice. It would be nice being able to cut this down to just over an hour.
So I think in general the HPWC allows you to keep a lower SOC on your battery, which in turn is better for your battery over the long run.
I'm debating same thing--but not sure $2700 is worth it. I don't drive but maybe 60 miles (at most per day).