I've had terrible luck with Singers - I can't remember the model numbers but they couldn't stay repaired - the same with a Brother. Now I have a Pfaff and adore it. I've also become familiar with a basic Viking that is quite the workhorse that I use when my machine is embroidering.
If I had to to it again, I would take a closer look at the Janome, Bernina, and Viking/ Husqvarna models equivalent to the Pfaff 2144.