I think they are both good grills. I just recently got a Kamado Joe Classic. There are two elements to the Vision that I'm not fond of. I like the powder coated cast iron top vent on the Kamado Joe is quite solid compared to the thinner steel top vent on the vision. The Kamado Joe has a separate fire box and fire ring where the Vision has a single piece (unless that has changed recently.) The firebox itself on the KJ has a heat expansion gap in it, and so does the one on the Vision, but being a single piece on the vision, it could be a lot heavier and a little more difficult to move. I have only seen photos of the Vision but I have a couple friends online who use them. I'm not sure how thick the inner ceramics are on the Vision compared to the KJ.
Kamado Joe Big Joe ° Kamado Joe Classic ° Old Country BBQ Pits Brazos Offset
UDS ° Traeger Lil' Texas Elite