I use a set from thebeamstore.com very high quality, maybe a bit over priced, but I feel confident doing weighted pull-ups on the top bar. HLR are great on it, except if you are someone who requires a lot of movement back into the wall to get your toes up to the bar.
Mounting was east for anyone who can use a drill. (Mine is in concrete with anchors)
Also great to do elevated back bridges, and having a strong frame to do some other stretches.
Also I have a strap that hangs from the top bar that allows you to do some back extentions and modified reverse hypers.
Not a necessary tool for the home gym, but I do enjoy it.