My experience with the 9000 and 3K is identical to Donny's. I loved the 900...but it was heavy and the contact strips had to be replaced at least once per year.

The 3K has been a Godsend. I have two (including one of Donny's). After almost 3 years, I encountered my first problem with one. It was, according to the tech that worked on it, an electrical converter that went bad.

Other than that...no problems with the 3K.

Eddie