partitioned basement sub

I am a complete newbie but trying to do the best I can for a reasonable budget. I am re-doing my basement into a family room set up as 1/2 HT and 1/2 game room. Will use a section approximately 16x10 as the HT with an opening towards the front of the room (around 6') leading to the other section(13x15) where I have a bar and will put in a foosball table, etc. I plan on putting a 5.1 in the HT area and putting 2 in-ceiling speakers over the game room area and get a zoned receiver so I can have music everywhere. I will use the area 80/20 HT now but as my children get older and have friends over, I may end up using music more. I picked up the first piece of the puzzle last week when I purchased the EVO 40 system on AudioAdvisor. I would love advice on a sub in the $500 region. I have never had one, so don't really know what to expect. Would like it to fill both the HT area and the game area when listening to music. I am considering the Mirage S12 as well as the UFW-10, PBS-12 and the small unit from Hsu. Would those fill both areas for music? Would that be too much in my relatively small HT area? As I said, I've never owned one and don't really know what to expect in my room. Thanks to anyone willing to offer advice.