I bought a Pfaff. My favorite feature, the integrated dual feel (IDT). It acts like an even-feed foot that I can use all the time (perfect for piecing and machine quilting that isn't free-motion and sewing binding on). At last check, the cheapest ones with this feature were in the $500 range.
I bought a higher end model and the thing is an absolute work horse. It has gone through layers of seat belt strapping (sewed a messenger bag for my cousin out of high end fabric that were water-resistent and seat belt strapping was used for the shoulder strap).
Love this machine!!