Last I saw, MotoChopper was messy and didn't work with update MF9. Chainfire (CF Auto) is done in 2 minutes, works on MF9 and is so easy a caveman can do it.
Samsung Galaxy S® 4 MJA Rooted with CF Auto-Root Tutorial
HTC EVO Design 4G™ v4.0.3 Bootloader Unlocked & Rooted with HTC SuperTool v3
If it ain't broke, use a sledge hammer.