So I've got the Ulterra and I've had no issues at all, except once I let my batteries get too low and it would only come up half way. Still got home, and it was my fault as I knew I needed newer batteries. Came up and stowed after a short charge.
I fish Upper Buckhorn and it can get choppy. The number of times I almost fell in stowing my old trolling motor!!! I have to admit it's pretty cool to see the look on other faces when I hit the deploy button from the back of the boat or the stow button.
Others may have had issues but I've had none going on 3 years now.
Good luck with whatever you choose.