I have 2 Pfaffs a Select 3 and an Ambition 1.0. I love both of them the Ambition is computerized, has lots of stitches and a bigger opening and both have the IDT (love,love, love). The Ambition was $799 so within your budget. That said go to your local sewing shops and test drive to find the one with the features you will need and like.
Happy shopping.