This sub is quite possibly the best I've heard yet. I think it is an incredible bargain. I like the dual voice coils and the high power handling. It is perfectly matched to Alpines MRD M300 (if you need an amp for it). My experience with this sub is that it can take alot more than what it is rated, but don't quote me on that. My subs have taken a beating and they still pound like the day they came out of the box. I'd be willing to pay $200 a sub. I recommend this sub if you must go with a 10", otherwise go with the 12". Regardless, Alpine Type-Rs are the way to go. Don't settle.
I stumbled onto Sonic Electronix and started ordering from them due to their extremely reasonable prices and I was VERY impressed that even tho they are located in CA and I am in PA that their shipping arrived within reasonable time limits and they always shipped shortly after ordering.
In-Dash 3.5" TFT-LCD Monitor with Built-in Navigation, DVD/DivX/CD/MP3 Receiver, Bluetooth Ready, Remote and 40GB Hard Drive (for Built-in GPS Navigation and 20GB Storage for MP3 Files)
