small front take 5 speakers with small center and rear klipsch reference surrounds.... I have two eight inch subs that are both 100 watts rms each (maybe)... They actually sound great for movies but not great for music but they do get down to around 30-35 hz... I like movies loud but not quite reference levels... I've become addicted and now can find even the smallest of imperfections with sound.
Rickroll, if indeed you can hear, "even the smallest of imperfections with the sound", you can look forward to astounding improvements as you upgrade your system. The good news is that the most dramatic changes will be with your early upgrades in both the sub(s) and speakers. The bad news is that ongoing, more expensive, upgrades will continue to provide improvements, albeit diminishingly dramatic.
In other words, you can spend A LOT of money. For example, you can spend 10x the cost of the entire 5.1 Take-5 system on a single speaker, and still be on the low end of the top tier speakers.
I'm saying all this because of your comment that you can hear, "even the smallest of imperfections with the sound". As you move into higher and higher prices, the "improvements" get smaller and smaller. But in the neighborhood of the Take-5, "improvements" are staggering.
I agree your subs have lots of room for improvement, but if I had $500-1k to spend, I would consider upgrading my Left/Center/Right speakers before my subs. Just my .02. Either way, you're gonna have a lot of fun.