oztooltalk have FINALLY finished our massive grinder shoot-out / comparison. 8 trade brands: 18V, 5-inch and brushless.

Huge thanks to our abrasives sponsor: KLINGSPOR!
https://www.klingspor.de/en-au

We test cutting steel round-bar up to 30mm! As well as runtime testing, grinding, cutting concrete, and use a jig to ensure fair testing.

Models as follows:

AEG - BEWS18125BLC
Bosch - GWS 18V-125 SC
Dewalt - DCG405N
Hilti - AG 125-A22 (Brushed, 21.6V)
Hitachi - G18DBBAL
Makita - DGA517
Metabo - WB 18 LTX BL 125
Milwaukee - M18CAG125XPDB

Full Spec Sheet - 4:11
Results - 17:15