I had a very brief demo of this sub a little while back at a local shop. Fantastic sub; it really is. Whats amazing about a great sub is that it blends so well and that the bass is so freakin effortless. In that regard, this sub certainly didnt disappoint for the little bit that I heard of it.
That said, an MSRP of 3500 and a street price for probably a little north of 25, I can't say its the best bang for the buck. Its reasonably small for the extension and output its capable of, and I'm sure thats the attraction for some buyers. If size isnt an issue you could easily out perform that ML with a couple SVS Ultras for similar money. Likewise, there are several DIY options that better the ML for less money. 2 JL Audio 12w7's in premade cabinets with amp and crossover would be an easy solution, allow for better integration, and be an overall better setup. You could also consider a ported 13w7 for insane subwoofage.