I've had such a hard time getting the system to let me log on! I've wanted to check up on y'all and see how you were doing for quite a long time but the system kept kicking me out with invalid log in notifications. I have not forgotten how much y'all helped me in the early months of getting used to my ASV. I've passed that on whenever I've met someone else who needed one or had just gotten one. My sister has one now! And I've gotten married and my wife has one.

Now I have an actual question. I got my Respironics BIPAPautoSV advanced just after thanksgiving 2009. As of last week, I had logged 19,996 hours and during the thanks giving week I surely went beyond but it just displays 19,999 hours. I've been thinking its time to get a new one for quite a while.
(1) How long can one of these last? It is quite a bit louder than it used to be and also it seems "weaker".
(2) What would be the best new model I should get?