I'm browsing around the various multi-monitor stands offered by Ergotron, iMount, Quadvision, Keyzone etc but am unable to find a stand that allows me to have three screens in a top row centered over a row of four screens. Basicly a system that's flexible for more than six screens. I swear I've seen a system which sort of had a wide arc at the back - does this ring a bell with anyone? It does seem like iMount may be able to do it - I am sending them an email. Also worth noting is the low pricing of iMount - if you're interested they seem quite a bit lower than anything else I've seen.