Hi Fasteddy
Just had a look at the Suhner spindle, looks like it does not take ER collets. They say it can use the Kress collets with a new nut so I, thinking its almost the same as the Kress with a slightly slower low end rpm. Also watched a video of a Suhner cutting Aluminium appeared to cut OK but as with all routers the noise is a bit on the high side, hence the ear defender picture on the router!

Peter