As talked about in the Macbook Pro thread I am considering changing from a iMac + rMBP solution to a rMBP + Docking station + 4k monitor. Between a monitor with USB3 ports and the rMBP, I actually do not need a docking station, I just like the thought of only having to connect Thunderbolt and power to a rMBP and being done with it. My concern with is with throughput speed. If I connect the monitor, external HDD and ethernet cable to a docking station, would there be a perceivable speed difference as opposed to Monitor, HDD (USB3) and TB to Ethernet all connected straight to the rMBP? I know docking station quality will matter, I am looking at the OWC TB2 docking station.