There are plenty of other LAME's out there servicing Cirrus aircraft, for example The Aviation Centre at Tyabb.
All due respect to The Aviation Centre and others...
However, if I had an advanced and newer aircraft as a Cirrus or Diamond, I would only trust a factory trained LAME.
Maybe a few more $ is worth it for reliability. I'm sure the Factory trained guys know all the little things that keep a Diamond or Cirrus in the air and not on the ground...
I would also make sure the workshop has a current subscription to all the type's maintenance data (some don't!).
Again, that's not a slur on the ability of the Aviation Center or whether they have current data or not. Furthermore, if they have had factory training on Diamond or Cirrus then I stand corrected.