I've just had the opportunity to use this nailer and I have to say it exceeded my expectations. I had never seen BHTOP before, but the extra bumper that came with it made me want to try it. Overall the nailer is very well built and works great for the limited amount of framing I had to do when building a new barn for my garden. The device works well and has enough power to hammer wood with ease. I used some leftover LVL Remnants and the device dug nails into it with no problem. Nice tool, but the instructions aren't great, which isn't a big deal if you know what you're looking at.