I've been wanting a sit stand desk for a long time, but can't make a decision. I don't want a big one, so I've been looking at single columns, but then I worry the single columns will be wobbly at standing height. No stores demo them, so you have to buy before you try and returns are not allowed. Even then the guarantees are 2 years on the motor and 5 years on the frame. So you could spend a lot of money for something that isn't going to last that long. I have a saddle chair and wouldn't use anything else, they don't work with a normal desk, so I can't use one of those cheapo risers that sit on the desks.
"I've tried a bunch of standing desks and settled on having 2 stations instead of an adjustable desk."
I have been thinking the same. Maybe get two of those portable metal tripod laptop tables and just move between the two. But that will probably wobble a lot at standing height.