I know what you mean, I bought and put this one together several years ago and it was a bugger. It is not in bad shape for the years on it.Well, I've owned an Orbitron, which I got new in 1985 & they are a pain to put together, so I might think about the Pinnacle...I imagine that it would last a little longer. Perforated metal is stronger then mesh.
That's two +'s right off the bat. Which one is in better shape.
If you ever have a section of mesh come out of the Orbitron...It can be a bugger to get it back in. The mesh "slides" in a groove, which is held together by the outer ring... There are a dozen or so mesh panels...Once it's up, it generally pretty tough, but it cant deflect a football...LOL
When I found a Unimesh a few years ago the Orbitron got recycled yep...I scrapped it