No worries, Nick. Everyone is entitled to his opinion on here, and all are encouraged to state their piece.
To my mind, OEM parts -
versus- used parts is not really the issue. More important, I reckon, is that the kit is being properly looked after, and is operating correctly, to spec, and within limits (that is, in-cal if you like).
And, dare I say, the fact that it is working at all (rather than sitting idle) is always the Big Plus. "Down" kit may be (very) safe, but it's not doing a whole lot of good, is it?
In the case in point, surely what really matters is the quality of the image? If the user is getting good results, on which sound clinical judgments can be made ... well, that's it - job done - as far as I'm concerned.
