Best Protection: ASProtect 2 or Armadillo 4?

[dyn!o]

"non reversible metamorphing code transformation"
Hmm.... who invented such a funny naming?

There is no, and can't be for today, "non-reversible" code. It doesn't matter if it is some Startrek virtual machine + XFiles virtual machine + Matrix metamorph transformation because the software always must results in a simple logic which can be reversed and revealed. All you can do is complication. It's like with mathematic (for example) - it's complex at some levels but it always operate on a simple logic. If someone thinks he/she (?) developed "non-reversable" protection then it's a good time to wake up.

"EXECryptor include buildin crypto-strong short serial number support (12 chars!)"
It's not about key length. It can contain 1 terabyte (1099511627776 chars) serial support and the protection will still remain crackable, only because it's not about mathematic. Key length matters only if you want to avoid key-generators.

Hope that helped.

Regards.