There is no reason to argue, everyone has their opinion. When I buy equipment, I will look at those opinions, way them against my own and the facts. Unfortunately, there are no facts (measurements, extensive research, testing etc.) to support any claims on their website. There are plenty of client testimonials, for some people that may be enough. There might actually be sonic improvement, I don't know, but here is what I do know...
I am not going to buy expensive audio equipment that is not from an authorized reseller unless there are compelling facts that make it a sure bet. That is not the case here, I don't know enough and there are not any factual data to support the claims being made on the website.
There may or may not be sonic improvement, but there is not enough facts IMO on their website, for me to be comfortable buying form the website. I would also not recommend this site to others primarily on the basis I have not used them and for the above stated reasons.
If people are so confident it's a sure thing, then please go and buy from them, I am more than happy to have you take the risk and report back.