Hi Cindy,
I just bought a Pfaff Quilt Expression 4.2, my dealer had it on sale for $1900. Its a wonderful machine for piecing quilts and quilting them too. It has the built in walking foot(IDT), 10" of throat space, love it!! (my dream machine)
http://new.pfaff.com/en-GB/Machines/...expression-4-2
Please stay away from the new Singers, they just aren't up to par. I used to sell them. I have antique Singer treadles that are wonderful machines, just like they should be; its a shame that the new machines are so awful.
My favorite is a 1910 Singer 66 red eye treadle, the old lady is just amazing.
Older Berninas are lovely machines. I have a 930 and a 1031, both were top of the line mechanicals in their day. New Husqvarna Viking machines are good too, I had a Sapphire 875, has the 10" throat. I've seen some that are well within your price range, check dealers and see what they have.
Sharon in Texas