HI Friends, I bought an aftermarket DVD/NAV unit from smartauto24.com. Initially I wanted it to be installed by BestBuy, but my coworkers warned me not to go there. I searched on yelp, almost everyone on the list has bad reviews. Only Car Audo Heaven in EL Cajon has good reviews, but it's too good to be true. Some says they post reviews for themselves. Anyway, confused. I love my Touareg, and I really need some quality work. Anyone knows a good place to go? much appreciated!