Hi Ruth. I have a pfaff and love love love it. I have had no problems with it other then the odd adjustment due to my running over pins.
I love the IDT. Its great.
When looking for a machine, I made a list of what I wanted. did I want needle up/down, auto cut off. One touch reverse. among other things.
I'm sure your in for many answer to this question. I found the list really helped me in my decision. My Pfaff is now 8 years old, and I still love it.
I did have an Elna, lets just say, I'm glad its gone, and I will never purchase another.
But like everyone, some machine are good for you and some arn't
Good luck in your search and the final decision.
Karen