Its probably foolish to enter into this disagreement but several thoughts occur to me.
First, I'm not aware of any product for which there is only one level of quality. So to say that all hydraulic cylinders are the same, seems a little hard to believe.
Second, it does not seem to me that the CCM cylinders cost that much more than any others so for the life of me I can't see what the fuss is about.
Third, even with the DPCV the CCM cylinders are not that much more than ones without them, so again, I'm not sure what that fuss is about either.
So if I'm in the market for one, and I am, then it seems to me that if I can get one from a relatively local reseller, who stands by the product and includes a DPCV for not that much more money than why not go with him?