soon to be in the bOX:

Eclipse AVN6600
+iPod Adapter
+Tv Tuner
Pioneer 4-Channel Amp
PolkAudio db Series 6.5" Comps
PolkAudio db Series 6.5" 2-Ways
Pioneer Mono-Amp
PolkAudio db Series 12" Sub

sounds very good for the money I paid. my only weak point is the amps, but I bought them for the tC when I was thinking of going all Pioneer. I haven't tried out the new Eclipse HU because Im waiting for my xB, which should be delivered next week, but I know for a fact that it will sound better that the Pioneer DEH-P7700MP that I was running before.

 

Not only does it sound better, but it works far better with the iPod adapter than anything else Eclipse makes. Not to mention that it is the only 2DIN that has an Audio and Video output. The others only have Video out. I bought my AVN5495 when it first shipped. The HDD is cool, but the iPod adapter would be better.
Oh, and it is also the only unit that you can have Ipod and Sirius at the same time. Again, the other units don't do that.

 

yeah, thats why I got the 6660 over the 5495. I think the HDD in the car is UBER cool but I preferred to have the iPod as my HDD since I commute to work on the train also. That way I put iPod in car on my morning drive and then take the iPod with me on the train ride into Downtown. I honestly cant wait to put it in. I also thought the "plug and play" ability of the Eclipse HU's made them a better choice for Scion/Toyota since it gives an almost factory looking NAV unit...