I own one. I bought mine new around 99, 2000. It was my first Whites machine. I now own the mothership Whites (Spectra V3i) and I have to tell you the 5900 is still hard to beat. There's not much you need to know other that just getting time on the unit. It can frustrate you to no end but can be your best friend too. I had not used it for almost ten years and picked it back up about a year ago. It just seemed at time that I wasn't finding anything when my buddies were loading the pockets with newer units, but after spending a couple months with it again I started to get very aquainted with it. Once I stardted getting to know the machine again I started crushing the competition. I was very reluctant to put it down but I decided to buy the V3i. I've been tempted to revert back to the 5900 and I probably will at some point just to try it out again. I know one thing I will never get rid of it. This one is in the family to stay. I have pulled many coin from 10+ inches. Good luck!!