I use copper crimp sleeves for all of my terminations, and it's flawless, cost effective and lets you re-use your expensive terminations from several manufacturers including WBT and Furutech.
You need to get the right kind of crimper (WBT's is like $100, but a similar tool can be had from Lowe's and the like for $30).
You need to get the right kind of crimper (WBT's is like $100, but a similar tool can be had from Lowe's and the like for $30).