Lol dude he’s looking at Polk db and kicker not setting a sound stage for competition most mid level suggest coax to fill the car with sound I personally run seperates front and rear and a single sub but I’m a audiophile and spend more on my sound system then some do on the whole car
But they recommended the kicker key which has a mic and can adjust and delay not saying separates aren’t the best route but you can make the coax sound great with the right equipment and tuning