Your favorite Small Apartment Speakers

@OP,
Yes, I think the Gaia should help with unwanted bass frequencies migrating to other apartments.
FWIW, I hope to be trying some Townshend isolation products with my system. I just need to get some time to play...
And, as an aside,
I live in a single family home about 100 years old. My main system is on the first floor.
If I go to the basement, I hardly hear anything. If I go upstairs, there is also not much I can hear- unless I really crank it up.
Bob

@audiokinesis 
Interesting. I will reaearch further. One speaker I heard that I liked was the Spatial M5. I had ruled it out as a floor stander. 

@arion  
Absolutely not opposed to DSP. I have zero experience with it but if there's a step by step I should be able to get it to work. I don't frankly care how accurate or linear a speaker is, all of them are to some extent in the higher dollar brackets. I just want something that sounds good. I like my Focals, but I feel like I can do better. My only reservations about DSP is that it typically adds a substantial cost. I was, for a while, looking into miniDSP or something of the sort.

@gdnrbob Thanks, I will look more into that. I want to be a good enighbor, even when I'm being a bad neighbor haha

I own a pair of Fritz Carrera 7be's and they are a pleasure. Scanspeak Revelator woofer and Transducer Labs pure beryllium tweeter. Very detailed throughout and go down to the mid 30's. First order series crossovers. Very well built. I find no need for a sub with these guys.

I would check out the Monitor Audio Platinum 100s.  Tons of detail and good for rock and metal music.  Good bass response as well with a rating of +/- 6 dB at 40hz.  They need to be driven by a neutral to slightly forward amplifier.  

There are four dealers in AZ.  Give them a call and see if they have them on display.  

@thecarpathianInteresting. I will look at those

@verdantaudio I have seen those mentioned but I guess I never really look at them. I'll look deeper.

@glennewdick No interest in anything Audio Note. But thank you.