I purchased the 55 because I have (2) 27 monitors with my laptop in the middle. It all fits nicely. The spliced panels for the work surface are under all of that so I dont notice it. I love having the 3 saved height settings, and use them for seated, standing and walking on an under adjustable height desk https://www.fezibo.com/collections/height-adjustable-desk treadmill. I think having grommets would help with cable management. The hooks dont want to stay attached - all of the reviews about assembly and the screws are true. Particle Board doesnt forgive. I may add a little construction adhesive to the screws to help them stay put. I opted to use the casters, but after we had it built, just put a teenager to use tilting the to so we could screw them in as quickly as possible. I thought it came with USB charging ports, but all I could find were (2) RJ 45 ports on the outside of the standing desk https://www.fezibo.com/collections/standing-desk that powers the motor. What are those for?

If someone could help solve the port mystery Id love to know! Otherwise, I love my desk and have shared the link with many of my friends and coworkers!