I am very pleased with the Ophir arbor I recently purchased.  After reading some reviews I did not expect it to be super sturdy but I was willing to give it a try.  I bought the "open package" deal, so paid less than full price.  It is very very simple to put together and as long as it has some support (mine spans from house to privet hedge- I wired it to house for stability) it seems totally fine.  I   I LOVE how it looks.