Hmm... I think the 85As could be the best bet then, might be worth that little bit extra if I can get the money for them... I have a 80A fuse already linked up to the system, so I think that'd all end up fitting alright.

Just going to stick with the servo-based controllers then I think until I can afford them, or sell some old stuff that I don't need to help raise a bit of cash for it -thanks all for the help!