My 0.02$. I'd buy the 160.
I dont know if this is possible in your setup or not, but raising the center channel to the position your mains create their 2ch phantom image makes a huge difference in creating a seamless and realistic frount soundstage. (Tweeters aligned). This is especially true for bluray concerts. Game changing.
I'd also agree with bridgman that a center channel should be as capable if not more than the mains and carefully level matched with a measuring device. (Not just by ear.). This also helps reach that smooth seamless soundstage up front.
Most importantly, enjoy your new kick ass center channel!
