I run a speedster which I'm very happy with , despite a few minor problems that were sorted . I might add that my last machine , prochem powermax , had more initial problems but I was happy with that also at the time.
From a distrubitors point of view however if your not getting the back up from whoever is importing the machines and its costing you money to put them right then you are going to stop dealing with them,its not a question of how good a machine it is.
I'm sure in the states theres not a problem with Mytee machines but over here it looks as though they were on the market before a real after sales structure was in place with all the backup and parts available.
I would have thought though that you could get hold of a replacement pump or vacs when needed.
Mike