Alexander,

Whenever I am connecting large numbers of connections I always use ring crimp connectors. I attach them all to a single bolt and screw a nut on top to secure them onto it.

Just make sure you first attach the bolt to something non conducting i.e. a plastic and make sure that the connections are properly crimped or soldered on.

Its very secure and I have yet to have this type of power distribution fail on me.

If you arent sure what I mean by the above I will see if i can find a pic.