So I have a sealed dual 10 inch box with .7 cubic ft worth of room in each box (small size is due to the fact that they are under my backseat of a Silverado), and I am looking to upgrade from my Alpine Type E's. What are some of my options for around 300 or less for me? I came went into a local shop today and priced out a pair of DDs that fit my budget, but after reading some reviews it seems like they don't do well in sealed boxes-is that true? Or would they still sound good with this set up? BTW, its all being powered by a Alpine MRP-M500. Any opinions are welcome.