I'm the same. Sound quality is what I want to go for. I have a playlist with about 7 songs in FLAC format that I use whenever testing my audio equipment (I.e. headphones right now). I like to hear everything in a song but still get enough bass power to feel it.
I was looking at getting the Infinity 8" woofer and building the system to match that level of loudness with really highh quality
I can personally recommend a nice 4 channel amp like the PPI S960.4. it has better Sq than the Sedona line up and should be enough for what you need. Have seen this retail for $1900
If youre willing to give up a bit more space a 10" DD 500 series sub can be very musical. I personally own the 8" and 12" version and both of them are really nice and blend well with the music. Having heard the 10 I can highly recommend it at its price point assuming it is used in a factory sized box and tuned to about 35hz. It will provide the nice low end extension a bit similar to over ear studio monitors once it is matched by a component speaker set while being able to shake the car up so you will definitely feel it.
The 8" 500 series also does the same thing but since I am feeding 550W rms to mine im not sure how itll perform in a different cabin with less power.
Also if youre willing to go a bit extra, Hybrid Audio Imagine 2 way components are available locally for $1300 and by themselves are very impressive. They are supposedly one of the best component sets within the price bracket.
Memphis Audio also makes an entry level component set that retails locally for around $600. For the price its a great set having a flat frequency response with decent midbass.
I have the DD CS6.5 in my personal vehicle. I have it in the front doors with no rear speakers. I feed 50w rms to each side and in my cabin I get some ridiculous bass from them by themselves with a natural hump around 4khz. These are very loud for a pair of components with good quality sound and the woofer is very very shallow so itll fit in any car door. Retail on these are $850.
If you're interested in getting some demos I can pm you the info to the shop in Central I purchased from.
You will also likely a need head unit to have some adjustability over the system as well. Entry level Pioneer single din units with two pairs of rca outputs are enough. Have used and installed the Pioneer x6700bt previously.
As with all things Sq its placement and install, you might need to experiment a little bit before you decide on where to place your tweeters to get a great sound stage and also play with your low pass crossover on the mid bass woofer so that there wont be a gap between midbass and sub bass. Also do keep in mind that some cars have a natural tendency to cancel out sub bass at the listening position. In that case it is recommended to face the subwoofer towards the license plate side and it may require a 3" cut out in the back dash to get the bass to vent into the cabin(remvoe the back speakers in that case XD)
Hope this helps you Dude