Just got this chair in and put together. It seems very sturdy and well built. I haven't had a chance to use it yet, so I'll circle back and update this review later!
Easy assembly, great instructions. The unit itself is a little crooked and feels a bit flimsy. Good enough for back extensions, but NO WAY would I trust those thin handles for doing dips, especially if I weighed 330 lbs, as you claim to support.