External Drivers

Im building a 400x400 10lb bed 5 or 600 high corexy, z axis will be hanging off 3 leadscrews and 3 motors. It will be allot like the RailCore II 300ZL just stronger and bigger. So i need some of the strongest and most quite drivers i can install but i am not having much luck on which is best and will work. thanks

Imported from wikidot