That is good news!

I sold my 600 and 700 but currently have a 950 and two 850's, one of the 850's will be replaced with the 900 (it should be here any day).

I'm glad to hear that it is working well.

I've installed a few 900's and haven't had any calls from the clients.
Could be because they thought they didn't push the button properly:-)

I will update their remotes for free if the revised update fixes the problem (that I have not encountered).