this threads a good example of how different peoples experiences vary.
I guess it just proves that sometimes you can get away with refills / clones, IF you happen to come across someone who knows what they're doing.
The problem is that they are few and far between......
Several comments here about the reliability of Samsung and Brother lazer printers. As far as I can make out these brands both use the same factory (or group of factories) for their production, and there isn't much difference between their products, except maybe in styling.
Its worth stating that a Health Service Trust who I'm currently contracting for has close to 2000 Brothers of various models, some going back six years or more and they're pretty much bullet proof. The only problems are where the printers have second trays fitted and the staff switch them around when they run out of paper......