6x9s- Diamond D391i, Polk DB690, or something else

Actually I just saw some PPIs for a great price on Ebay and was wondering how their speakers are. I know they make great amps so I figured they would pay the same attention to their speakers, although I can't recall seeing anyone on here that owns them. Does anyone have an opinion on these?

- unless you can find a 6X9 with an outboard crossover, the PPI's would be my first choice... they are like the 6X9 version of the Polk SR series... the cone is a knock-off... foamed poly = aerated poly.

 
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