Alright, after some extensive research, I still can't make up my mind. I'm looking for an under $500 sub (spending less would be preferable). I've narrowed it down to the following. Please help me decide which is the best value in terms of performance for the price. My room dimensions are about 14 x 16 and will use it for a 50/50 movies/music split. If you have a recommendation you feel is a better value than any of the below, feel free to share as well. Thanks!
Epik Legend: $350 shipped right now, currently out of stock, but I'm leaning towards this but have heard of amp problems: https://store.epiksubwoofers.com/ProductDetails.asp?ProductCode=L-171
HSU VTF-1 MK2: $470 shipped: http://www.hsuresearch.com/products/vtf-1mk2.html
SVS PB-1000: $500 shipped: http://www.svsound.com/subwoofers/ported-box/PB-1000#.UvlfTD2wKy9
PA-150 $500 shipped: http://www.amazon.com/Premier-PA-150-Acoustic/dp/B004436EEU
Epik Legend: $350 shipped right now, currently out of stock, but I'm leaning towards this but have heard of amp problems: https://store.epiksubwoofers.com/ProductDetails.asp?ProductCode=L-171
HSU VTF-1 MK2: $470 shipped: http://www.hsuresearch.com/products/vtf-1mk2.html
SVS PB-1000: $500 shipped: http://www.svsound.com/subwoofers/ported-box/PB-1000#.UvlfTD2wKy9
PA-150 $500 shipped: http://www.amazon.com/Premier-PA-150-Acoustic/dp/B004436EEU