I want to upgrade my CS-88 manual underpinner and have narrowed the search to three. I am in Canada, so bringing a unit across the border adds a couple of steps and a couple hundred dollars. So far, the most expensive is a VN-42. Nearly new but located a long way away. Next is a Fletcher Corner Pro 5600. Brand new, never used but purchased quite a few years ago, and located in Canada. The least expensive is a VN 2+1. It is "well maintained and rarely used". It is about 6 or 7 years old. I am a home based business that started as a hobby, but is taking up more and more of my spare time. Picture framing may turn into a full time job when I retire from my current occupation in a few years. If anyone has any advice or opinions that may guide my decision, I would be interested. Also, if you have a good used machine that you think may interest me, please let me know. Thanks