Got a pair of these for my Tannoy 802's, which are quite heavy powered monitors. I am very pleased with the stability and construction quality of the stands. They were easy to assemble too. These are the first stands I have purchased, but possibly the last as I see no reason to replace them.
I like being able to rotate the speaker stand if required, so if you do too then make sure the top plate isn't screwed too tight or the speakers won't turn, like wise, too loose and it won't feel solid enough...so more than nip it and it's perfect for me.
No complaints about this product whatsoever, and what a fantastic price too.