Here is an old Craigsub ranking from another forum.
JL Audio Fathom 113: 103 points Velodyne DD-18: 100 points ACI Maestro: 97 points JL Audio Fathom 112: 95 points Hsu VTF-3 HO + Turbo: 94 points Hsu VTF-3 HO w/o Turbo: 92 points Hsu VTF-3 Mark III + Turbo: 92 points Hsu VTF-3 Mark III w/o Turbo: 91 points SVS PB12-Ultra: 90 points Axiom EP-500: 90 points Hsu VTF-2 Mark III + Turbo: 88 points SVS PB12-Plus/2: 87 points SVS PB12-NSD: 86 points Hsu VTF-2 Mark III w/o Turbo: 86 points Rocket UFW-12: 85 points (provisional) SVS PB10-NSD: 83 points Rocket X-Sub: 78 points Rocket Tyke: 60 points
I got my HSU STF-3 when the canadian distributer was selling them of. At the time I was wavering between that and the PB12-NSD. Both are good subs, especially for the price.