I have had the Pfaff Expression 2. for three years, and I love it. I have been quilting for about 3 1/2 years, so I haven't quilted too much on other machines. I use it for piecing and quilting, and I have made clothes with it also, but it is mainly for quilting.
I don't have any trouble with the automatic needle threader though. It is close to my favorite part of the machine, as I have always had trouble threading the needle on any machine.
Dina