the millwakee elect grinder is the only one ill use ! the 4.5 comes in 3 different amp ratings make sure you at least get the 8 amp the 13 is nice but most guys cant make it draw the amps so ??? if you spend that money on a tool ,make shure its comfy ! any grinder you have to hold on with your thumb sucks!!!!! i love the trigger on millwakee your whole hand covers trigger and its glove friendly!
