OK all you car audio experts. Do you think any of these are much better than any of the others? I'm trying to pick one and would appreciate any advice. I did the side by side specs comparison but don't know what all the lingo means. The main thing I want is XM ready which they all have. I had trouble finding one that's pure silver in face color.

http://www.crutchfield.com/S-vV2TteT...P&i=130DEHP390

http://www.crutchfield.com/S-vV2TteT...30&i=105KDG430

http://www.crutchfield.com/S-vV2TteT...R1&i=257KDHDR1

http://www.crutchfield.com/S-vV2TteT...35u&i=113MP535