It has been discussed. This is the thread that I was using for my research: Best, cheapest, DIY hacks for standing desk for laptop, tablet, etc
I just bought the RAD and I love it! I chose it over the tripod style as the U-shape doesn’t interfere with the wheel. The table is very sturdy and, at least for me, was bigger than it seemed in the listing. The height is very good and can easily clear the handlebars, allowing for a lot of flexibility on where you place it.