I own Century 500i's that I bought new for my fronts. I found a set of 800's and was thinking of using them as my fronts and using the 500i's for the rears. My rears are 2b's now. I'm wondering how you have found them and if there would be a point in getting them if I use a subwoofer now since every speaker is set to small? Would there be an advantage or better sound with the extra 8" if my sub handles the low frequency now?