Well, I've used the same sewing machine for many years now, and before that I had the same one for over 30 years. Both were Pfaffs, and both were wonderful--the 1525 I have still is, I use it every day and is great for free motion quilting.
I bought this "new-to-me" one recently on a yahoo group, called SewItsForSale. The person selling it ended up living only about 45 miles from me, so I met her husband yesterday at a quilt shop in Greensboro where she gets the machine serviced, and brought this home with me. My Pfaff is in the background, and looks like a baby machine compared to this one. It's really HEAVY, and it's a mid-arm size. It only does straight stitching, but has a large area so I can get some of my larger quilt tops quilted up. Now I just have to figure out how to use it!