I listened to several sets of Polk RTi and LSi series speakers before buying my Axioms. There is simply no comparison. The Axioms are better by a huge margin! There are many online reviews of Axiom speakers. You can get the links elsewhere from this website.
BUT, you need to listen to both brands and then decide for yourself. I have friends who have owned Polk speakers for almost 20 years and like them very much. I happen to like the sound from my Axioms better. There is some subjectivity involved in this preference! :-)
