Multi Cutter Recommendations ?

Hi,

We purchased our first Multicutter a couple of years ago, and though we only used it on a few occasion we did find it very handy, but while sanding today its gearbox started failing and not always oscillating, though the motor is still running.

It was the cheap Guild brand from Argos, so are there any recommendations as to a better brand to purchase, in the sub £100 range ?