Lori -
If you're talking about the 9" version, we have the Pfaff 1200 on Imperial frame and we love it. As others have mentioned, the space is a bit limiting, but it's a great entry into frame quilting. We have only done pantographs, but I think we've saved money in the long run by not having our quilts done by a LA'er, and I'm sure we would never be able to learn to quilt on our DSMs.
We had some issues when the machine was new, but after we got those ironed out we haven't had any trouble.
Let us know what you decide.
Darren