I get what you're saying.
Unless you're super lucky your feet from 15 years ago won't fit. Heck I can't get mine to fit when it's been less than 15 years.
Your budget I don't think is large enough to get a machine with a large throat area, up/down needle/ and extra feet. I think computerized is a standard now.
I just purchased a machine. I have large throat, up/down, and more feet than an octopus needs. The stitch choice on the machine is amazing. It was expensive. I also purchased a table to put it on as the table I currently have won't fit the machine.
Look at Janome's and Bernina's. Stay away, far away from Singer.
I will tell you that a narrow throat and less stitches is less expensive. As far as feet go that depends on the model you choose as to what comes with it. My last machine I had to buy a 1/4" foot and a walking foot. This machine has those feet plus more that came with it.
Have fun shopping! Try them out. You could also ask if the store you're working with will sell their floor model.