I am looking to build a new PC for charting purposes only. possibly looking for 4-6 screens. I dont need anything 3d or top spec. Whats my best and cheapest option to go about this? ie quad card or 2 x dual card. And which ones you recommend. Any help appreciated. Also where can i get hold of multi arms or is there another solution? I know multi holders are pretty expensive. What do people use as an alternative?