A Guide to Bipolar, Dipolar, & Direct-Radiating Monopole Surround Speakers (PART I)

[Hygienist]

I'm trying to put together a budget 7.1 HT system for a 10.5' x 13.5' room, based on the Jamo C400 series. The two seater sofa is in the middle of the room, but it occupies much of the 10.5' width since it has a center console, meaning that I'll be somewhat, but not too close, to the sides, and that a large sweet spot will probably be best. 5.1 isn't possible due to obstructions preventing me from placing a side surround anywhere other than directly to the sides of the sofa.

For the 4 surrounds, I'm wondering whether to go with the
C401 Bookshelves
http://www.vanns.com/shop/servlet/it..._c=site_search

C400SUR dipoles
http://www.vanns.com/shop/servlet/it..._c=site_search

(The lack of tweeters on the C400SUR dipoles concerns me; something to disqualify them over?)

They're the same price, so getting the cheaper option is out. This will be only for movies and games; no music. I've read a ton on people who prefer dipoles for movies, including an "Ask Audyssey" thing where Chris K. recommended dipoles for straight movie watching. I'll also be calibrating it with Audyssey 2EQ or Multeq, if that makes a difference.

So far I'm leaning towards dipoles, but anyone with experience with dipoles is welcome to chime in with their experience.

I've also got one major concern:
How 'bad' are dipoles at precise positional audio? Will a sound coming from my 7 'oclock sound like it's one massive blobby sound behind me, or will it just be less general, as in sounding like it ranges from 6-8 'oclock?