My approach as I mentioned earlier, is not the path that most take. Audio equipment, whether home or car has been a passion of mine for a long time. I understand enough to make choices against the norm that still work out better than the norm. Sure, one can use the stock headunit (yuck), or add an aftermarket headunit and coaxials in the dash and sound bar and be happy. Some even add an amp, which is a good idea, but I'm still not impressed with the sound of such a setup. I've tried it with decent equipment, and not junk, and it was still a fail.
If you want to retain usable space in the Jeep, which I do, then you have to live with those limitations. The limitations are that it can only get so loud and will only have so much bass, and will not be loud and sound great at highway speeds with the top down. There is just too much ambient noise to over come. I can hear mine fine at 70mph with the top down, but it's no longer really good sounding.
Some make their decisions based off of certain published specs, I mostly throw those specs out the window. Those specs being power handling and sensitivity. My wide band A pillar speakers have a rated sensitivity of only 80db and a power rating of around 10 watts. Someone that only cares about specs won't believe my setup is louder than their Polk Audio coaxials with their rated 91db specs, because on paper they wouldn't be. In practice they are, and sound a lot better too.
The install and tuning are more dramatic than the brand choices by a large margin. If you just install a headunit and put some coaxials in the stock locations, and put no effort into the install, like sealing off the gaping holes in the dash mount, you'll get mediocre results at best, and to some, that is good enough.