Best software protector: Themida or Enigma Protector?

[ChupaChu]

imho best way to protect your software is:
1. to not alow crackers to read authentification algorithms - simply put them on some web server, and athenticate through some php script.. the algorithm can be simple as you want..
2. encrypt and decrypt exe critical code parts on the fly using the key that can be checked only on the web..