Like the previous reviewer, my Powertec experience had issues. On one of the bottom frame pieces had a square, welded upright support guide that was off-center and also not perfect square, so the upright tube wouldn't fit over it. I was able to fix this by building a vise and a few other shenanigans, thankfully, and I was able to finish building the rack. Additionally, the chinup attachment isn't very ergonomic for doing, um, chinups. That being said, everything else has gone well, and I really like the unit. I would still buy this unit if I had it to over again.