Thought this topic would be a good sticky, and here is a start.
I have just bought a Ryobi angle grinder, of the 125 mm variety from Bunnings ($79.00)
It is by far the quietest, smoothest angle grinder I have ever used and it has a ton of power. I have just sliced off a lump of the bolt of a tow ball from the towbar I was given, and then a vertical slice through the nut as it was rusted on. The 1mm thick cutting disc sliced through with ease (and a shower of sparks) with barely a judder and no snatching.
The grinder seems to be a newish item, and has a green and black handle
