Alright so I am about to start my first water cooling rig...I can't decide on single or dual loop and would love some input. I will be running an i7 920, EVGA X58 SLI LE board and Radeon HD 5970 all with EK waterblocks. I am planning on running a XSPC RX360 in the top and an RX120 in the bottom of my new obsidian with an XSPC 5.25 bay res/pump combo with a Laing DDC pump. I am curious whether I should setup a single loop or go for dual loop seperating the mobo block from the cpu and gpu. I would love any input on this as its my first run with WC and need advice on the benefits and drawbacks of single loop vs dual loop for my particular setup.