Pioneer TS-A171Ci - TS-A131Ci Auto Speaker

Hello. I am considering buying a Pioneer TS-A171Ci speaker for the front doors and a TS-A131Ci speaker for the rear doors. As far as I have researched, these are the highest wattage speakers of Pioneer. There are also his twitter. Does anyone use or know these speakers?

For the front only TS-A171Ci is 16cm in some sites and 17cm in some sites. Would it be a problem to be 17cm? dijitall.com/urun/pioneer-ts-a131ci-oto-hoparlor.aspx Reviews