Compatibility of Hitech C Compiler for Atmel 8051 Architecture Microcontroller

I am looking for the right license to use for the Atmel device on the system. There are 3 which are available: Pro mode, Standard mode and Lite mode. I would like to know the compatibility of these Hitech C Compiler licenses for Atmel 8051 Architecture Microcontroller. What would you recommend for me to use and why?
