The range of variability in audiophilia makes this a very subjective question but it's fun to explore the options.
I wonder if the type of music you prefer matters. ?? Jazz, EDM, jam bands, classic rock, pop country, classical, opera, Buddhist chanting, etc, etc. LOL.
I installed the little $99 Sound Ordinance 8" powered subwoofer under the rear fold-n-tumble seat. It's a pretty easy, clean, and out of the way install and not too much of a space hog. The head unit is some Alpine $99 bargain bin base model that works fine with Bluetooth and pushes the four cheap aftermarket speakers enough to hear my tunes clearly in any environment.
Another consideration, since you state that you're running a soft top, is the security issues with having lots of high dollar sound equipment in your TJ. I've had three shitty stereos stolen since ownership of my TJ (1999) and the ease of entry through vinyl and plastic has deterred me from installing anything too expensive. Granted, I've left my Jeep parked with the top off at many trailheads over the years but if someone wants in, they're going to get in whether the top is on or not. Just something to keep in mind. YMMV.
I wonder if the type of music you prefer matters. ?? Jazz, EDM, jam bands, classic rock, pop country, classical, opera, Buddhist chanting, etc, etc. LOL.
I installed the little $99 Sound Ordinance 8" powered subwoofer under the rear fold-n-tumble seat. It's a pretty easy, clean, and out of the way install and not too much of a space hog. The head unit is some Alpine $99 bargain bin base model that works fine with Bluetooth and pushes the four cheap aftermarket speakers enough to hear my tunes clearly in any environment.
Another consideration, since you state that you're running a soft top, is the security issues with having lots of high dollar sound equipment in your TJ. I've had three shitty stereos stolen since ownership of my TJ (1999) and the ease of entry through vinyl and plastic has deterred me from installing anything too expensive. Granted, I've left my Jeep parked with the top off at many trailheads over the years but if someone wants in, they're going to get in whether the top is on or not. Just something to keep in mind. YMMV.