I am planning to use the controller AT90USB1286, as it provides inbuilt USB functionality. For this, I am considering to use one of the two compilers/IDE, i.e.,
1. WinAVR with AVR studio
2. IAR IDE
Can someone share the differences between the two compilers, pros & cons and any risks involved in using GCCAVR....please helpme out as I am new to AVR tools.