I've only had it setup and have been working on it full time for 4 days and I'm already disappointed with the purchase.

Stability and quality are immediate concerns. During assembly, two of the shelves split on the top visible surface (even though I used a screw driver with low torque). This implies the diameter or angle of the pre-drilled holes are bad. Additionally, many of the plastic female screw inserts become loose when screwing the table tops to the frame. This results in a loose connection and would require that I take of the tops, remove the plastic inserts, use better glue, and re-assemble.

Even though all the legs are connecting with the well with my floor, the desk is quite wobbly (due to materials / structural design). My monitors are like two bobble heads just from typing. It's highly distracting and now I may need to find another desk.