I am SONY TA-E9000ES & TA-N9000ES user. Recently, I want to upgrade my speaker fot my system. I want to buy 5pcs same speaker (B&W N803) for my AV system. As I know, the tonal balance can be much better "Same Brand But Difference Model".

However, anyone can give me some advise? If I buy 5pcs same speaker (B&W N803) for my AV system, any disadvantage will occur?

I know the TA-N9000ES Power AMP may be not enough power to push the 5pcs N803. I will purchase extra power amp or 5pcs MONO block for the speaker.

I just want to know If I buy 5pcs same speaker is better than "Same Brand But Difference Model" or not.

Can anyone give me some advise?

Thank you.