While I was not there to observe both sides of the conversation, let me just say it this way. In all likelihood you spoke with Tom Jordan, ...and while he might have seemed "brash", he really is a genuinely nice and knowledgeable individual. Something to ponder that might be in his defense is tech advise is not his only job at Snyders. Getting orders filled is, --and you never know if Tom reluctantly dropped what he was doing to help you out yet had 10 other critical things on hold because of it. Knowing how Tom is, I truthfully would just chock it up to a stressful moment for him and not think about it again. He really IS a nice guy, ...and remember that he gets MANY questions a day from employees and customers who need immediate answers.
That is not always a factual statement, and in reality there are many more items out there that have multiple suppliers for. Just like WalMart and Target both carry Toasters, never assume they are the same product and the same quality. I generally think of Macs as wanting to distribute the WalMart-quality merchandise.