You seem to insinuate that other mfgers upgrades are for reasons different than Nuforces.
No, I never insinuated any such thing. I specifically mentioned NuForce's history of releasing upgrades to correct issues and/or problems with their amps...RFI interference for example. I'd be happy to provide a list of references if your require them. They are well documented by NuForce representatives in NuForce's own discussion forums on AudioCircle. The only other manufacturer I mentioned was APL, and I previously explained the differences between the APL and NuForce upgrades.
NuForce can release a revision every week if they like. My one point...and only point...is the system downtime, inconvenience and expense to the NuForce owner of boxing up and shipping the amps to Nuforce for updating. It's a pattern of which potential buyers should be aware. Yes, Ref 8 or 9 owners have the option to keep their older versions, but I doubt many will choose to do so.
Finally, one by-product of new technology development is the owner-as-beta-tester. Many owners of new technology seem to accept this as a part of ownership. Most NuForce owners certainly do, since they view the NuForce upgrades as a positive aspect of ownership.
Perhaps this is a new paradigm to which I must grow accustomed.