I am looking to run 4 speakers off an AMP. Currently have an Alpine F300 putting out 4x50 RMS and would like to use that but I am open to up-ing the power with a bigger amp if the better speakers need more then 50RMS

I have 3.25-3.5 Inches max mount depth to work with and want opinions on the best speaker for the money. I don't mind spending extra money if it is worth it long term. I hear JL are the best but I know big names also sometimes overcharge..

Can I get some input from guys who know their marine audio?