I had a Pfaff 7530. I loved that machine. It was a real workhorse and never gave me any trouble for 20 years. I traded it in 4 years ago only because I wanted more throat space. The IDT is great as you can use your 1/4 inch foot with it for accurate piecing. It did good fmq, too. It’s a crap shoot buying an older computerized machine, but if you get lucky you will not regret owning a 7530.