Big difference. The speakers are much more efficient and the sound quality is no comparison to stock. Getting away from the paper cones in stock speakers is probably the single best move you can make, in my opinion. BTW, I also upgraded the rear speakers, even though they are pretty much used for lower end sound (fade is adjusted to have most of the sound coming out the front.) The HU was also changed out at the time, and the next move is an amp to help overall efficiency of the system.