Hey guys need some help.

I wanted to get some focal speakers for my car and hope some of u can help me out. Trying to figure out the difference between polyglass and k2 power speakers. Been to a couple stores and install shops and they don't have them. Anybody know any stores in south palm or north broward where I can go listen to some focal speakers before I buy some ??

Any drivers got some in their car .. and recomendations on type of focal speakers ... don't want to spend more than $500

Thanks