What is the best way to protect my radio?
The absolute best way is to use a combination of a holster and a speaker mic. This way your radio stays on your belt and you talk in to the speaker mic clipped to your lapel. If you ever bang in to something while walking your radio is protected by the holster.
The second best option is to get either a holster or a speaker mic depending on which suits your needs.
Companies that buy holsters and speaker mics send in their radio for repair less than half as often as companies that don't.