Any hardware recommendations on best way to build a mobile system (prefer laptop over tiny desktop) that can power at least 4 monitors. The system will be mainly used for trading financial instuments when I travel. I've seen ways to use multiple USB to VGA/DVI adaptors, but the reviews didn't seem strong and was wondering if there a better way to do it (laptop docking station that can support a quad card? tiny desktop with 2 video cards?). Cost isn't a major consideration, but obviously would prefer cheaper route if all else equal. Thanks!