We had an ulterra and switched to a Terrova. Only problem we had ulterra was when the plug started going bad, so no fault of the motor. We also had it freeze up one time and wouldn’t deploy.
Do not miss the chance it might not work. But also miss the auto deploy and stow. Although the auto trim feature might be what I miss the most.
A guy in Canada this year had to rope his ulterra after manually stowing. That wasn’t fun for him or anyone else as we tried to help him get it fixed.