[hnexamazon]

I went with the commercial C-frame with a 60” desk and I think the 4 legged version would be overkill. I have a 27” iMac sitting on a 4U rack monitor stand filled with devices and probably around 30 pounds of music equipment on top of the desk and it feels consistently stable with no strain when changing heights. Unless you are putting seriously heavy stuff on top I don’t think you need 4 legs.

No CPU holder, but I got the retractable keyboard tray. At the lowest height (under 24”), it collides with the crossbar when fully pushed back. This never impacts me because it is well below the lowest height setting I use for sitting and can’t imagine it being an issue for anyone else. If the CPU holder collides with the crossbar, though, it’d probably happen at an unacceptable height. I would check the dimensions of everything before purchase.

For my purposes, I have an an additional desktop machine I simply keep on the floor by the desk.