It still amazes me when I read those "it's junk" diatribes about modern scuba equipment. The consumer has to determine if you sell the regs because you find them to be the best, or if they are the best merely because you sell them! Maybe the subconscious logic is> Premise #1: I don't sell crap! Premise #2: I don't sell Atomics Concluding: Ergo, Atomic must be crap!
No, I don't think this is a conscious decision for most shop owners but the attitude seems to be prevalent among many of them. It would be better to just extol the virtues of what you DO sell rather than dissing what you don't.
In the past, the shop was in the driver's seat when it came to gear selection. The consumer would come in and listen to the Dive Sage pontificate on which gear was righteous and which should be avoided as it was "junk". Now, the consumer need only google the internet or just come to ScubaBoard to find a veritable TON of peer reviewed gear ranging from the lowly spring strap to any rebreather you may want to consider. You simply DON'T have to rely on someone who's primary motivation is selling enough so they can afford baby's new pair of shoes. The best is that there are many, many people here diving the gear YOU are considering. If there is a problem, you can be SURE that it will be discussed here ad nauseum. To be sure, this is the first negative comment I have ever read about Atomic Regulators (other than price) on :sblogo: That says a LOT. Their first stage piston design is nigh to bullet proof and the design of their HP seats are genius. No, they are not an advertiser here, and I don't even dive their regs. But I have used them and have found them incredibly breathable.
That being said, the OP's offer to allow them to try the reg at a local dive spot is a GREAT idea. I would even let them do a whole dive or two if you really want to make a statement. One or two rental regs and you probably have it covered.