Many balisongs that you've probably seen are what I call "Charming China Cheapies". You're right. These are just crap. But, a good one, a Benchmade 45, for example, is more durable than any other knife. Even a legendary Sebenza still has a lock mechanism that can break and fail. The balisong's lock is just a piece of solid metal and a pin. It's entirely durable and entirely reliable.
You can get any form of knife in a cheap, made-in-China, knock-off. You know those knives, be they liner locks, lock backs, OTF auto's, whatever form, you know they're not good examples of their breed. So, don't go comparing a $5 balisong bought from some nameless guy at a gun show to a Sebenza. Get a balisong in the same league (and price range), and you will have The Ultimate Lock.
Short of a fixed blade, there is nothing stronger and more reliable than the balisong lock.
The fact that balisongs are illegal in many places does not change the fact that it is The Ultimate Lock. The topic here was not "The best CA-legal lock?" but "THE ULTIMATE LOCK?????"
Now that we know that the Balisong is The Ultimate Lock, perhaps you'd like to start a new thread, "The Penultimate Lock."
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Chuck
Balisongs -- because it don't mean a thing if it ain't got that swing!
http://www.4cs.net/~gollnick