Nobody. They should all be following MAP pricing for these better brands. For HT electronics it may actually be MSRP, not just MAP. Digital cameras is a little different. I bought my Denon DVDp at GoodGuys back when they were authorized. I got a "coupon" for 10% off. They did that a lot, I have a feeling that's why they are no longer web-authorized for Denon.

You could try JandR to see if they have better pricing, but I wouldn't expect much. Ultimate Electronics will usually give 10% off, and they are going out of business this month. If you have one nearby...