B2+ / C2+ buying decision help

[busen19]

I have a dedicated HT room that is approximately 15 ft w x 17 ft l x 9 ft high. Our seating position is about 11.5 ft from the screen and it's a single row of 4 that spans the whole 15 ft. I have two diy Dayton Ultimax 15's running off of dual crown xls 1002's and onkyo NR7100 handling avr duties. I was pretty set on getting the C2+ as my center but read the awful reviews over at Erin's Audio Corner, mostly concerned with the horizontal dispersion. This is the part I need help with. How can I tell if the two end seats closest to the wall will be impacted by this?

The C1+ measured better but I think it may be a little small for almost 2500 cu ft.

Additionally, do the B2+'s pair well with the C2+? I don't think I need towers given these will be crossed over at 80 hz.

[busen19]

I did the math - hopefully correct :-)

My listening position is about 135 inches from the front. My widest seat is 64 inches from center. So my hypotenuse is sqrt( (135^2) + (64^2) )= 149.4 inches. The sine would be sin(64/149) = 0.41539790202 and the asin(0.4154) would give me a listening angle of about 25 degrees at my farthest seat. Is this how you figure it?

[creimes]

Well the B2+ is $50 more than the T0+ tower and on top of that you would have to buy stands unless you already own those, for mains in a HT setup I would still go with towers for sheer SPL over a smaller speaker, I run three towers behind my AT screen and did own two UXL 18" subs but at the moment I am subless, I am 11' from my 100" screen.

Chad