Gotta be the midrange for me, but anyone who knows me knows I'm a stickler for a good tweeter too. "Good" speakers don't have to be expensive either. It's a case of finding the right tools for the job. I tend to stick with stock locations because I insist on my front stage install looking like nothing ever happened in the way of audio upgrades. Install and tuning within the restraints is how it goes down. I'm also paranoid as hell. Hell will freeze over before I have big pods that scream "aftermarket audio". Some people tend to conveniently forget that not everyone is over the deep end in this hobby like they are. I don't consider myself over the deep end because I know how to make my system better in the form of speaker placement with fabrication but don't have any desire to make it happen because what I've accomplished with very little effort AND MONEY sounds damn good. The single best thing I've done for my system is bypass the factory amp to get clean signal from the factory U-connect screen. Nothing I do from now on for the system will top getting a clean unmolested signal to the processor. And as much as I talk about swapping out the front stage the only way that will happen is if I have a speaker fail. When that happens the entire front stage will get changed since I'll be in there anyway. Beyond that, the system is "done".