It's definitely not OEM quality. The hardware is there, but the software on the D5113U leaves a lot to be desired. Controls and UI are terrible (IMO) and really need improvements. I can live with it, but wouldn't be surprised if others couldn't. Dang chinese should hire better programmers! I know they have them! If the D5150 fixes these issues it would definitely be worth it, especially considering what you pay for. Dynavin's can easily break $1k with accessories: http://jandtdistributing.com/dynavin...-e46-3-series/