In article .com,
says...

Buchanan Crimp Connectors

are the way to go

http://www.idealindustries.com/wt/CrimpConnectors.nsf

I do love their crimp tools -- besides being the best electrical
crimpers I've ever used, they do a great job of securing end caps on
bicycle gear and brake housing -- since they crimp from four sides at
once, they leave the housing round.

--
is Joshua Putnam
http://www.phred.org/~josh/
Books for Bicycle Mechanics and Tinkerers:
http://www.phred.org/~josh/bike/bikebooks.html