There is no such thing as a "needed" machine for quilting. This is an art that can be done completely by hand. Most of us want faster results. Any machine that fits your budget and is reliable will make your quilting easier. Most of us do our piecing with basic machines. Some want and can afford more and that is what we have. As far as a machine on a frame, there are a few different types such as short arm, mid arm, and long arm. Long arms are financially out of reach for many of us (me), but I am researching mid arm machines, or maybe just a frame that I can put my basic machine (short arm) on. There are options available in all price ranges. I personally can't justify the price of a Gammill or any other long arm, and spending more than I can afford would take all the joy out of quilting. Enjoy whatever you have and move up as you decide what you want and can afford.