Those of you with short arm machines on frames, how essential do you think it is to have the Sure-stitch or Grace stitch regulator, especially when getting started? I have a frame, but no machine for it yet. I know some people say to get as big a machine as you can, but I really want to get good at this and I've also heard that the stitch regulator can be very helpful. A nine inch machine with stitch regulator is comparable in price to a 13 inch Bailey without a stitch regulator. What do you think?