I'm looking to upgrade my speakers a little bit from my current "ok" but cheap Technics sb 2665 speakers to something a bit nicer. I'm currently trying to decide between a pair of Polk Monitor 7b's or a pair of Polk Monitor 10a's, both are similarly priced and appear to be in good working condition. I've read up on both of them and they appear to be decently regarded speakers. But I'm not able to find a clear consensus on which one is better or even if there is a better one. If it matters these speakers are going to be powered by either an Onkyo Tx4500mkII or a Marantz 2238. Any help would be appreciated, Thanks.