Thermaltake has a nearly perfect product with the BlacX 5G. The accessory package is one of the best we've seen with the longer USB 3.0 cable being the standout and the drive covers being the first we've seen to combat drive acoustics. Thermaltake's brand name is also attached to the BlacX 5G, so we don't have any doubts about its long term use. The final piece to the physical puzzle is the transfer speeds associated with USB 3.0 and the BlacX 5G delivers on this front as well with very good USB 3.0 performance that matches the other USB 3.0 products we've tested.
The only real issue we found is the price. The BlacX 5G comes with more accessories and a longer cable, but the price also increases as well. Personally I would pay more for the BlacX 5G since it has a longer USB 3.0 cable. At some point you are going to pull your computer out from under your desk, but will you remember to disconnect the HDD dock with a short cable? - Most likely you will forget and the dock, possibly with a drive installed, will come crashing to the floor. If you have a mechanical drive installed then you can kiss it goodbye nine out of ten times.
When it comes down to making a purchasing decision, you might want to ask yourself just how absent minded you are and how often you will pull your computer out. It's difficult to imagine your purchasing decision coming down to this, but I speak these words from experience.