As I've posted already, I have a JuiceBox 60A unit, bought several years ago based on the desire to be all-in if I'm going to go electric. Took three years to get there (240V feed), but the Bolt was a great motivator.
The JB folks have been amazingly supportive, feeding me firmware updates to keep my unit up to date, particularly when they changed their online monitoring code in an incompatible way. However, I'm a tech geek and very comfortable with this stuff. (There's a FEH out there with an Arduino driving indicator LEDs for the aftermarket heated seats that I coded and installed.) If you're not comfortable with pushing the update yourself, they'll let you ship the unit back for an upgrade. For me, being in control is important.
So, I'm a enthusiastic supporter of the JuiceBox. I'm looking with some interest at the OpenEVSE stuff, but no reason to change at the moment.