if you are planing to mine ETH OR ZEC mainly panda miner is a cost effective miner with custom psu. you have to spend some time but its worth it ..al in a box!!!
I'm reading posts about Panda Miner, looks like panda miner getting sold instantly when they start selling on their website.
It kinda looks like I'm very late to mining party but I still have plans to build a second rig with server psu and pico