The Multi-Contact LS-4 is also available in unhardend copper alloy that will allow crimping without splitting. But you have to order the minimum of 100, and wait 6 weeks for delivery, and they're simply not as springy.
An alternative would be the Audioquest BFA-G Kit (gold plate) or BFA-S Kit (silver plate), similar to the Analysis BFA plugs suggested by srb above. They're $7 a pair from -
http://www.ramelectronics.net/search.ep?keyWords=bfa&x=12&y=10Their limitation (for me) is the maximum 9ga wire they can acommodate. They're also very difficult to crimp, requiring a hydraulic crimper (although a hammer might work)
As I need to crimp 2 10ga wires to a bfa, I use the standard hardened Multi-contact LS-4 and use a Gardnmer Bender copper crimp sleeve 10-310, availabe at my local Lowes
I take the LS-4 and cut off the tag for soldering with a small scissors, open up the base end, insert the wires, and slip the copper crimp sleeve over the tip to the base, and crimp the sleeve over the wires and base of the BFA. It works quite well. You need a racheting crimper with a proper ferrule (trapezpoidal) or hex die.
FWIW,
Paul
