I haven't seen it mentioned here yet, but Startech also sells a TB hub that looks even more like the CalDigit model.
http://www.startech.com/Cards-Adapt...hunderbolt-Laptop-Docking-Station~TBDOCKHDPBC
$249.99 USD from Startech, I think it's also available for less from other retailers.
At first glance, I thought they might have bought out CalDigit except for the color.
Includes a cable, same ports.
RE: multi-displays: I think all 3 - CalDigit, Startech, and Elgato would probably work the same way.
So long as you have an Apple TB display, you can run that, and then 1 other display off of HDMI port, (or possibly daisy-chained off of the TB display, or off this dock's TB port if the dock is daisy-chained off the TB display).
I've read a hook-up sequence somewhere else in a review of the CalDigit hub. You need a TB display for multi-monitor, if not using a laptop. The reviewer actually had 3 screens running as the TB set-up was attached to his Macbook Pro. The documentation for both the Elgato and Startech seem to indicate a similar arrangement is needed.
Yeah, all three of those Thunderbolt docks look really identical to each other. All the port layouts are the same and just the cases are different. Oh here is the review you were talking about: http://fortysomethinggeek.blogspot.com/2013/11/caldigit-thunderbolt-station-docking.html