I'm looking to upgrade my 3 front speakers, and would like to spend about $250, if possible. The speakers will sit on a 1X10 shelf, so I want either front ported or sealed speakers. I am interested in the Infinity P163, which are currently $85 each. Second choice is the smaller P153, currently $75 each. Do you guys have any other recommendations for nice bookshelf speakers? NO, I do not want to buy used speakers. Thanks.