Here's a nice Kenwood that gives good bang for the buck at 99.99
Here's the Pioneer you're already looking at. Same price as BestBuy, but...
With the purchase of any car receiver from Crutchfield:
FREE mounting kit, wiring harness, and antenna adapter — Save up to $65!
Buy an in-dash receiver from Crutchfield, and we'll send you a FREE mounting kit, wiring harness, and antenna adapter made specifically for your vehicle.* You'll save time and money on the installation, and it'll be easier to reinstall the factory radio if you sell your car. Add a receiver to your cart and see how much you'll save.
If you don't have any interest in MP3/WMA playback, this Pioneer is the same as the 4600 without the MP3/WMA capability.
I've purchaced a lot of stuff from Crutchfield, including big ticket items, and never had a problem with them. Their customer service is exemplary and the free installation stuff they send is just plain awesome.