Well...I'm not a car audio geek, but can claim to be a 55 year old recovering high end audiophile (home systems).

Before you trash the stock speakers, try listening to them on the new head unit. I, and a few others on the forum, find them to be acceptable, especially when you do some extra sound treatment of the door and interior panels. If you do not have the stock speakers, then you'll have to follow others' advice.

I do most of my listening when actually driving down the road, with the exception of sitting in slow moving traffic or a parking lot while waiting for the wife to shop. So the road and wind noise within the VX masks most sound quality improvements you get from spending 100's to 1000's of dollars.

Regards,
Henry