What toolchain are you using to minify and obfuscate?

I am getting ready to launch and have tried a bunch of different minify/obfuscation utilities but none of them mangles the code like whatever you are using. Most can be run through a pretty print utility to get reasonably readable js back. I understand if you are hesitant to post the answer in public but would appreciate some help along these lines.

Thanks!

We use the Google Closure compiler in ADVANCED_OPTIMIZATIONS mode. Closure Compiler  |  Google Developers

ThanksI I give that a try.