I seem to have rocked a little too hard and one of my Boston 6.4lf speakers is popping over about 1/3 volume. I know I can get replacements on Feebay but if I can replace them with better speakers for close to the same price I might as well. I'm going to be going active anyhow so upgrading now isn't such a bad idea. What do you guys suggest for raw 6.5" speakers? I've always bought sets so this is a new experience for me. Thanks.