I'm a big fan of these for DIY'ers.
They will stop you from over torquing. You don't need a full set, just the size and torque for the vehicles you own. I used to use these at our shop, too. My method is to use this in the star pattern, take it for a quick drive(even 5km or so is enough) then use the torque wrench. Thousands of tires changed, never had one issue with that method.