An outside perspective on all this, I'm not in the market for a computer so I am Totally unbiased here.
wrap computer guy - sorry, but you are coming across as an over-protective, overzealous, way-to-eager-to-make-a-sale salesman.
Everyone has their opinion, including you, and everyone is entitled to have their say.
To have someone "bag" your product (as I understand the price initially) isn't always the nicest thing, but to come out with all guns blazing and going ballistic to defend it (and make yourself look like a fair bit of a child in the process) looks to be a bit extreme.
You have what seems to be a great product, I'm sure those with the need will buy it.
You don't need to convert all several thousand of the members here in the first short while you are here, you have a merchant classified board, go there, put your case up and let the computer itself do the selling - just be there to assist any enquiries. Anything that gets said on other parts of the forum, just people exercising their freedom of speech, save your sales pitch for those who need it.
After all this who-har, if you were on the one side of the room, John on the other and me in between with limitless $$ to spend, I'd be steering towards John, simply because of his professional attitute - and not allowing himself to get sucked into a childish game of who has the better toy.
Sam