I'm looking to upgrade my head unit in my 2012 Yukon. The main reason is I can't play aac files which is the ITunes format. Its a pain in the ass to try to convert my 1000+ songs to mp3 and they don't sound as loud and clean. Really want something that looks factory but is new tech. I saw some guys were buying $1000 Advent decks but is there anything cheaper? Maybe without a cd player?