My parents built one for me and my brother when we were young. It is still standing today with no problems. Other that needing a power washing. I don't know the brand because I was only like 7 when we got it. It was a kit you bought of a slide and fireman's pole and the instructions. It came with a list of the lumber needed and you bought that seperate on your own. I think that was a good option because my dad "upgraded" some pieces to allow it to be a little stronger. You could also by expansion instructions for other pieces like a swing set.
Ours is a clubhouse with a tarp (which we have only replaced once). It came with a slide, fireman's pole, rope ladder and climbing rope. We added a small section for some rings. We also bought a bridge later on and added that to the side. This thing has held up to my brother and me, my cousins, and a 100lb dog who loved to go down the slide. It has been through hurricanes, noreasters and blizzards. Me and my brother loved that clubhouse. My mom won't take it down because she is sure that her grandkids will use it too.