I’m interested in a line laser such as the pls5. The immediate use I think it would be useful for is framing interior walls in attic truss bonus rooms and cape cod type 2nd floors. You know what a pain locating walls on sloped ceiling can be. I could see alot of other uses too, mainly due to the plumb, level, square abiltiy as opposed to a rotary laser. Anyone have any input before I plunk down 800 clams?