Sub recommendation in ~$1k range for my room and usage
I have an old M&K MX-125 MK II sub that has been acting up lately, so I started looking at a new sub but could use some help deciding what is best for my room. My room is 12x16, with an opening to the adjacent kitchen (ie only 3 walls). Currently my sub is in the corner next to my couch, so I will likely use that same space for the new sub. I typically don't play my system very loud and will use it equally for movies, music and video games, but I do value accuracy over volume.
My speakers are older B&W bookshelf speakers - DM602 and 601 and my receiver is a Denon AVR-2809 and I use Audyssey MultEQ XT. I'd like to stay around $1k, so I was initially looking at either the Rythmik LVX12 or the FVX15, but I know there are tons of other options out there and could use some suggestions.
Also, since most of the internet direct companies don't offer free return shipping (other than SVS), does anyone know how much return shipping would typically cost for a sub? Given the weight and size I would imagine it is quite expensive.