The sturdiness of this can not be overstated. I am extremely happy with that aspect of it. I don't expect anything that would fit the footprint of the arms to be able to wiggle this whatsoever.The only improvements I would make would be on the bottom portion it is impossible to set anything across it with the way the angled reinforcements are. This isn't really an issue, but it does mean that if whatever you are looking at setting underneath it on the table surface won't really be feasible unless it is less than the width of the stand and can fit in between the support feet. This might be hard to state in a review, but I hope you understand what I mean.I have a couple of these half off of the surface of the table and they still are heavy enough to support anything on them. I have used clamps to secure the feet to the surface as a precautionary measure.The soft pads are fairly isolating and there is no noise introduced to anything on them or through them. They also serve as fairly decent antiskid pads although depending on the surface you are using them on your mileage may vary. I don't foresee it really ever being a problem though.The bars that go across the back to hold the two sides together are indeed may out of plastic and would be the first failure point if these stands were to fail. They are hard plastic and because of there being two seem to reinforce each other in a way where the load is shared. The angle of the rear piece with the holes not being vertical is the reason this occurs as the top bar has tension forward and the bottom bar as tension to the rear. This is obviously thought out from an engineering standpoint. This is most likely the main reason why these can be sold at this price.Overall, I am entirely pleased with these stands. I have used them for a variety of uses including keyboards, synths, and laptops. They are even strong enough to hold CDJs although I don't believe they are rated for such so I would not recommend that use officially. If a version 2 would to be made with metal poles and screws instead of plastic I would have no reason to believe they wouldn't hold whatever you can put on them. You could probably stand on them at that point.