I have 2 Pfaffs and really like them both. I use the older one that is 30 years old the most. I think the model is 1471 and it has the IDT. I couldn't live without that. I have a Pfaff Embroidery 2140 and I liked that too. I had a bit of a problem with the presser foot not wanting to stay up when I lift the leaver. My dealer fixed it but it's going the same way. I've had it for about 8 years now.
I agree with one of the replys about buying a used machine. My next machine will probably be a used Pfaff with IDT.
I think babylocks come with IDT - the integrated walking foot now.