Carter, the result is, you left customer(s) with poor customer service, then have opinions of bad service when its done to you. You sold "sad" and "depressed" underpowered unit(s) and when you get passed one, you claim to be sad and depressed over it. You're customer has had nothing but problems with the unit(s) you passed off and again on the second try - much like your own experiences and since your customer is always right, I am sure he/she is "qualified" to feel the way you feel about other entities. I just find it very interesting to see you provide the same underpowered product and service you denounce others for. Like the OP said, "the crusader against scammers turns out to be a scammer himself!" To me its more like: " the crusader against sadness and depression from underpowered products turns out to sell sadness and depression with underpowered products".
How does it make you feel knowing that you let down a customer, not to good right? Well how do you think you make people feel in your opinions, qualified or un-qualified? Doesn't feel to good does it? Leaves you feeling like no matter what you do isnt good enough, right? So why don't you spend less time defimating companies who are dealing with the same things you are and more time improving your own. Viral marketing is viscous and finite, using your professional or qualified opinion to sway your potential customers by negative opinions of other product, only creates an allegiance and an occassional sale, not a futuristic and realistic profitable customer base. I suggest you improve your own faults instead of pointing out others. Because, for one, you just became what you accuse others of doing and for two, if you have to trash talk other product to make a sale, then your trying to sell a belief system and not a quality product whether or not your trying to save someone a buck.
However, good luck on your endeavors whatever your motivation is!