For a 9-inch (230mm) angle grinder, you’re looking at a heavy-duty tool used for cutting metal, concrete, stones, and welding work. The key things to check are power (watts/amps), durability, and comfort (handle + vibration control).
Here are some of the best Makita 9-inch options available
Best overall (most common choice)
Makita GA9040S 9" Angle Grinder
~2200W / 15 AMP motor
~6000–6600 RPM
Soft start + rotatable rear handle
Built for continuous heavy-duty work