Hi 2x6,
I certainly didn't mean to imply it wasn't OK to criticize a piece of equipment. I was merely suggesting a courteous, more considerate, less insulting way of doing it. The point can be made without poking a finger in someone else's eye.
And, I completely agree that no one should ever criticize a piece of equipment with which they have no personal experience. I feel it's OK to pass along something you've heard about a unit you've never experienced, as long it's made perfectly clear that it's hearsay.