I've got 2 of them and they are much better than the press bard stands you find on the Market.. matter of fact" I'm prob going to order another.
however, that said ..all of my large tanks 110x, 75's etc are all on the furniture grade stands.
personally I think if they welded a brace on the back of the stand ( x brace from corner to corner) I would think the stands would be much more stable.
I use these on 29's and 20 longs with good success.