I have a cheap wheel marking gauge, and I wonder if more expensive ones are better. I'd like to hear experiences with different types and opinions on which ones are the best -- and why. Not just the best manufacturer, but the important design considerations. For example, Lee Valley sells a Starrett for me or than $100. Is it really that much better than others? And how useful are the double gauges, the ones you can use to mark both sides of a mortise, groove, etc., at the same time?
Thanks!