And I've already purchased stuff from sonicelectronix twice (about 400$ worth the first time and around $135 second time)... received all my stuff and very happy with it. It got recommended to me by one of the cartoys ex-installers. He worked for cartoys, circuit city (until they closed here), VTR - you name it. Does his research.
And it's not always the best price (I know that some sales on crutchfield actually let you save a few bucks over their price) but I found them to be cheaper than many other places. They're like a discount tire of audio/video for cars... Did you have a bad experience with them? If so - please do tell.