Just throwing in my two cents here but for the life of me I do not understand why you trashed the 990.
I have the 990/7700 combo and have not had a problem let alone one that would make it a candidate for my local trash pickup.
I purchased my combo back in 2002.
Don't take offense it is your right to do whatever you want but I think you over re-acted...maybe because you wanted to move on with a newer piece of equipment.

I think that you made a rush to judgment concerning the 990.
Sorry for your loss.