As mentioned before... do a search. Lots of info already discussed here.
That said, having experience with both, here is my take: BAS are nice and easy to install compared with the FA Dodge. If you are not doing the install yourself, bring your wallet as the Dodge has quite a bit of labor involved. The craftsmanship is very different when you compare the two side by side with the BAS looking much flimsier. The upside of this is the BAS are lighter, but side by side, the Dodge are way way more beefy and much better made. The Dodge provides tons of hard points for tie downs as well as stow much nicer (flatter to the side.) Anyone who has ever ordered from Dodge knows what to expect as far as quality.
Most folks go with BAS, I think probably cuz of the cost. I have never read any complaints about BAS, but folks typically never bad mouth stuff after something is done and they have already spent the cash. For me, having tested both, I went with the Dodge for my Skywagon project. IMHO there is no comparison.
Some pics of the install...
http://www.backcountrypilot.org/forum/n ... ?start=320