Nancy, If you want a Necchi, save for a Supernova. When the Necchi Supernovas came out they were considered the Ferrari of the sewing machines. I'm sure that I'm one of the few that treadle a Supernova Ultra; and one day after the novelty wears off, I'll put the motor back on so that the machine runs at the speed it is designed for.
The Supernovas are fun machines to play with the decorative stitching, and excellent machines to sew clothes with!