I have a Pfaff machine Barmaid and I love it. For what you are going to sew the dual feed on a Pfaff is invaluable. I make all my curtains and the dual feed ensures the fabric is fed evenly even when heading curtains with buckram or tape. You'll never get that twisted look on the headings that make curtains look homemade.
I have used the same machine for all my furnishings in two houses and more costumes that I could shake a stick at for Am Dram. Wedding and bridesmaid dresses and a soft toy business when I was broke.
It's not the cheapest machine but well worth it.