I purchased this about 2 weeks ago (I'll post a picture later):

http://www.amazon.com/gp/product/B006JG9RQ2

The monitors I'm using are smaller than yours, but the product is listed to be able to support three 28" monitors. The build quality is good. The stand itself doesn't move around much. There's an option to drill a hole through your desk to clamp it down too. It takes about 45 minutes to assemble. You might be able to do it faster; I like to take my time with building things.

As far as adjustments go, getting all three monitors to line up perfectly took me about 2 hours. I'm neurotic when it comes to my monitors---They MUST be aligned perfectly, and the colors and brightness MUST match (this took about 3 hours spread over a few days). It includes an Allen wrench for building. You'll need a Phillips screw driver to screw in the VESA mounts to the monitors. A word of caution: The middle mound cannot be moved from the center. As such, in order to tighten the bolts to prevent the middle monitors from rolling, pitching, or yawing, you must tighten the center bolt. They don't give you a tool for this, so you'll have to use a socket wrench. To tighten the side mounts, you can use the included wrench. Speaking of tightening, you'll need to tighten the monitor adjustment bolts very tight. I mean VERY tight, otherwise the monitors will move. This is kind of an issue when it comes to fine adjustments and neurosis.

My colleague has this stand.

www.amazon.com/gp/product/B006JG7G2E

The difference being that this stand must clamp to your desk. Here's a review for it (careful, loud music starts at 1:17):

https://www.youtube.com/watch?v=fuwQQP7fREg

I'd recommend either stand. It's nice having the extra desk space and I don't have to slouch to keep my eyes level with my monitors. Let me know if there's anything else that needs clarification, or if anything doesn't make sense. :D