I have a Pfaff 7570 that I bought in 1995 and have never had a problem with it. Yes, it does what I want it to, it's my 'go-to' machine. I just bought a Pfaff Performance 5.0 since my other Pfaff has been such a good machine, I wanted another Pfaff. I don't think I'm going to get rid of the 7570, gotten kind of attached to it after all these years. The new machine has more bells and whistles than the 7570, and hopefully will be as good a machine as the 7570. I have a Baby Lock Elegante which I've had quite a bit of problems with.
I think another Pfaff would be a good choice.