Hi,
I used in the past an almost new second hand mch16 for 5 years with a total usage rate of 3000hour.The machine was ok, but only one slight problem, a fume of oil was always present when running(3 phase electric) But again this machine was not off the newest anymore and I dont now of this is still present with the new models(altough the are using the same lubricating system as the old ones). My average cost for service was something about 1000 dollar a year(heavily used).I am using now a mch30(at present 3 months old with 85 hours ) and am happy with it, no fumes at all. Bauer and l&w are more known in Belgium and they have the fame to be more durable but also more expensive. Before the coltri I used a Poseidon serviced by draeger and others and the service cost was high. So if you are asking ,would you by a coltri again,yes I just did it.
Hope that I contribute something.
Ron