Have the original and it works fine if it works. Ours quit working after only about 10 uses (over 3 years--we obviously don't use it a lot) and the only place it could be repaired is with Winegard itself. It costs us $300 to get it fixed. Don't know if the original was defective or what, but didn't discover it wasn't working until after it was out of warranty, so we were SOL. If it breaks again, that will be it--won't be paying to repair it again. So far, so good, but it's only been a couple of months. Haven't seen that that is the common experience, though, so maybe we were just unlucky. I'd just recommend being careful with where you store it in your unit so it doesn't get jostled around a lot. Ours was stored in a storage unit in our motorhome and after the expensive fix, we now store inside when we travel.
Good luck with your decision.
Pat and Deb