First time trying a rack and I am very happy how it turned out. I love to tinker with electronics and was getting to the point that I had several desks covered in systems/parts. I purchased the 15U version and was able to get 6 computers and a DAS off my desks and placed on the rack. No issues with putting the rack together at all, just time consuming. Definitely get a drill, I used a dewalt 20V on torque setting 6 and I didn't strip any screws. The shelves can't really take alot of weight without bowing so I had to put my larger workstation on the top behind the monitor(Dell T30). I bought 2 extra full length shelves, only have 1 in the picture though. The wheels that come with the unit did not look like they would take the weight that I wanted to put in the rack so I bought new ones at my local farm store for a few bucks. Other reviews mention the max weight in the instructions differ from the stated one on the amazon page and mine said the same thing, I probably have 60 to 80lbs total loaded on the rack and it seems solid to me. The only thing I wish I would have done is bought the 20U or even a 24U if they make one, the unit is just a tad short for my barstool I use to sit comfortably and use the top workstation. I will be buying another one soon to finish clearing off my desks.