I just picked up one of their new Idasen desks. It's a lot sturdier than their previous ones that I've seen.
I get minimal wobbling of the desk surface at full height, but my monitors do still wobble a bit. At normal desk height there's no wobble. I think most of the wobble comes from the cheaper VESA mount, if I'd gotten a more rigid one it would be better but I wanted more flexibility in arranging the monitors.