I have the 8900 MCQCP and love it. Have pretty much sewed on it every day for (5) years. A lot. It worked perfectly until it didn't. No warning that anything was amiss. I brought it in to the dealer, and they said it's the computer board. Bad enough that the part alone is $435, but the part is back ordered until the end of March. Needless to say I am a little freaked out. All they have told me so far at the dealer is that it is "not common" that the computer board goes out. That said I have made about 60 quilts on this machine from start to finish; piecing as well as FMQ. I have been super happy with it. I am hoping once it gets fixed it will be trouble free once more.