qProtect is a brilliant and feature rich obfuscator - especially for it's price.
The obfuscator itself is powerful, and is expandable with custom transformers such as the Jinx transformer and the native transformer.
The support was kind, helpful and professional - offering help when needed, being quick (about 2 - 4 minutes between message) and available at any time needed (even at 4am - GMT). They solved any issues I had with it.
It also has neat features such as having official support for being used as a Maven plugin.
Overall, qProtect is definitely worth it for it's price.