Need Help Choosing Which DECK? HELP PLEASE

http://www.bestbuy.com/site/olspage.jsp?skuId=7652408&type=product&productCategoryId=cat03066&id=1134701297693
or
http://www.bestbuy.com/site/olspage.jsp?skuId=7675599&type=product&productCategoryId=cat03066&id=1134702498186
or
http://www.bestbuy.com/site/olspage.jsp?skuId=7660541&type=product&productCategoryId=cat03066&id=1134701325185

Which one of these 3 decks would you choose for maximum sound quality and/or high bass output? The Pioneer is the one I'm elaning towards because it seems it has more features? Is Aux Input a good feature to have? (It means I can attach any MP3 type player to the head unit correct?) Well anyways I would love to see which one you guys recomend because I am relatively new to this and don't know much. Thank you very much.

you won't notice a difference between the 3. get the one with the most comfortable layout and most features you like.