Best smaller Sub under $300 (used ok) for use with NHT Super Ones
I almost got an Energy e:XL-S8 off ebay for around $130, but I lost (barely). There are no more up for sale at this time, so i'm considering other options (hopefully better subs). I've been considering the HSU Research STF-1, which is $315 including shipping direct from HSU. I know this sub is better than the Energy, but I'm not sure over double the price (of a used Energy) is worth it. Also i liked the fact that the Energy was so tiny, since this system will be in my bedroom.. Both subs have similar specs, although i'd bet that the HSU sounds better. I can't justify to myself to spend over twice as much for something that is not significantly better, so I'm kinda stuck at this point. Any recommendation for a smaller sub under $300 (new) or under $250 (used from ebay, shipping included) that would be a good match for my NHT Super One speakers. By the way, this is for a setup devoted 95% of the time to music (mostly metal).