I bought the Weider PT 800 power tower 3 months ago, and I am really happy with it.
I am 6ft, 105kg and wanted something sturdy, I use this 4 to 5 times a week for dips, pull ups, leg and knee raises.
It takes up a small corner in my living room, so very good as we don't have a lot of space.
I cancelled my gym membership as this covers everything I needed aside from dead lifts.
I thought about buying a cheaper power tower to save some money, but as I'm a bit heavy I'm glad I went for this, as I thought it looked like it had a solid frame and it does, I think I will get many years out of this.
I would say you get very good value for money for the quality, don't think I have ever been so happy with anything i've bought.
Only down side is that there is no bar in the middle for a narrow grip chin up, it's not a big problem but it would be perfect if it had this.