I've been looking at stand-up desks for a while now, and settled on this one and so glad I did! I've got a 4 monitor tree with a large base (13" long, I think) and the top shelf is deep enough to accommodate it with no overhang. The tree is also very heavy, probably 40 lbs. with all the monitors attached, and the motor to raise the desk had no problems at all. I tried it before loading it up to test, and I did not notice any difference after loading it with my equipment.Assembly wasn't too tough, about what I expected - took me maybe a couple hours altogether. The desk is nice looking and very sturdy, and the size is perfect for me. The controls are easy to use (just push a button), and the presets were even perfect for me (I'm 5'7"), so I have not had to customize them.Assembly was not without its challenges, and this speaks volumes for their customer support. First, upon opening the box, I could not find any assembly instructions. Tried to follow the video in the listing, but that was difficult to follow. I contacted the seller about it and they sent a .pdf of the instructions very quickly. Second, one pack of screws was missing, so I bought some from a hardware store. They made amends for that, as well...again, very quick response. I did eventually find the instructions under one of the bottom flaps of the box, which I discovered when breaking down the box after the desk was assembled!I whole-heatedly recommend this desk and this company - great product, great support, and I believe a very reasonable price. My only problem is that now that I see my office from another vantage while standing, I realize that I really need to tidy up a bit...hmmmm...