I have a phaff expressions 4.0.
I love the IDT, The reason I bought a Phaff, (this is my second)
I love the large harp too
I have had some issues with it and the wonderful dealer that I have has replaced many parts. It is working better now
Things I don't like, it's heavy, it's shimmys and shakes, and it's won't sew multiple layers. I recently had to sew something, and wasn't even that heavy and it overloaded on me, had to dig out my our chaff. I was also trying to quilt a baby quilt and it kept skipping stitches, took it to the dealer and he said my batting was too thick, it was just poly/cotton blend