Ann, I quilt on a millennium that is older than that at our LQS. The owner sent her in to be refurbished and she came back purring. I also know they have newer wheels called M&M's that help with the movements as well as the Bliss system. If the machine runs well and it is the movements you are having problems with I'd be inclined to check out the M&M wheels and Bliss system.
I also have a friend w/a Statler Stitcher and she loves it (this is her buisness) of course the computer does very accurate work. Of course the $35,000 - 40,000 price tag makes it very spendy.
Hope this helps.
Marie M.