Sorry to revive such an old thread, but I figured it was better than starting a new one asking the same question.
I've put together my HT system all but the sub. I'm trying to decide between these two pretty soon. I've done so much reading over the last few days and I feel like I don't know anything more than I did a few days ago. Basically what I'm seeing is that the F-12 is maybe better for home theater use while the Polk is better for music. I'll be using the sub for almost completely movies and TV, and not music, but I'm concerned that the F-12 is going to be too loud and boomy for my use.
See, I won't be doing much music, but I live in an apartment and don't want my neighbors calling the landlord on me all the time. So when I hear something is aimed at movie use, it doesn't really strike me as a pro. I will be mainly keeping the volumes low, so I'm thinking I'd rather have the clarity. But I've also seen people have issues with the Polk's frequency response, which doesn't sound too promising.
I will be pairing this with a Yamaha RX-V671, Pioneer FS52 mains, Pioneer C22 center, and Pioneer BS22 surrounds. Part of the reason I ended up going with this setup rather than a Polk Monitor 60 or 70 setup is that, while the Polk's were clearly stronger and louder (expected for the higher price), they also sounded, to my ears, too overblown in the lows and mids. I valued the more neutral clarity of the Pioneers over the punch of the Polks. The same would hold true for the sub, and it seems like the Polk is a better fit for that.
I'm also interested in the warranty/quality aspect if anyone has any experience there. Part of the reason I'm even in this situation is that I had bought a Klipsch speaker setup with an RPW-10 sub, and the sub went out after two or three days. I returned everything and started over, and that brings me to where I am now. I don't want to go through that again. The BIC has the better warranty, but I'm the kind of person that would just rather not have to use it.
Also, my room is a smallish living room, probably 14x18 or so, but unfortunately it's directly open to the hallway and the dining room (10x12 or so), and there's even a "window" into the kitchen. Basically, the worst setup for a HT ever.
EDIT: Standard 7' ceilings and carpeted floors.