Can I use the same 5pcs speaker in the AV system? Is this perfect?

[leo99]

The problem for some is that they prefer to sit the center speaker on top of the T.V. Since the 803 is a floorstander it will be difficult to do this. If this is a concern, buy 4 of the 803s and then find a center channel such as the B&W Nautilus HTM1. If this is not a concern then get 5 of the 803s.

Can I know when the B&W N803 is horizontal on the TV, the sound quanlity will be affected?

If compare to the B&W Nautilus HTM1, which sound will be better and match the system?

Thanks.