Could use a few opinions. I'm getting a new Macbook Pro with 256GB HD. I want to get a dock for it. I don't plan on using super highend monitors and I will rarely transfer files to/from an external drive. The TB2 docks are significantly cheaper than the TB3 docks right now. Can you guys help with thinking of something that I would regret by buying the TB2 dock? Looks like there might be some power issues to consider? Thank you very much.