I have a BEFCO 7' sickle mower that I bought new. I tried to find a good used one but gave up. I use the sickle mower mostly for a/ mowing around a pond bank and b/ in its 90-degree up position, mowing the sides of roads and trails. In the 90-degree up position mowing applications, it saves me a huge amount of time, although it took a little seat time to get comfortable with hearing those blades churning so close to you. For my applications, the sickle mower works great. But because I don't have and will never have a lot of hours of use for the sickle mower, it probably wasn't cost-justified. The one maintenance issue I had is that the so-called conic bolts, which anchor the operating arms that are attached to the sickle blades, loosened and came all the way out. It was a real chore to get them replaced, plus they were very expensive when bought from BEFCO. I was already accustomed to tightening the conic bolts frequently, but now I make doubly sure every time I hook up the mower to tighten the conic bolts with a torque wrench.
The one thing I would for sure do differently is buy a 9' sickle mower. I could use the extra 2' when mowing around the pond bank and also it would be better to be able to trim the tree-limb overhang on the roads a little higher.