Yeah, I've been doing a bit of research and seem like people are really enjoying the stabilizers.
The thing about treating the room is that I completely redid the room where I was doing the music so: no furniture, couch, etc. I wanted to be solely dedicated to the studio so I was going for full treatment.
This is the good part, the bad part is the form of the room is the worst possible: it's a square, so you need a lot of trapping. I think the most crucial part is the corners (and I still get some bass notes that resonate more than others).
Of course prior to treatment and after, it was like night and day but I did no measurement at all.
I dont know if the ceiling cloud is going to help you in the bass area, as when I was doing my researches I learn that basically you mount panels and ceiling cloud to avoid early reflections from the speakers, so basically for mid to high frequencies. Maybe it will help a bit on low end but I dont think it will be very relevant. Maybe do more bass trapping on corners? Remember in a room there are not 8 corners but 16 (8 tri-corner + 8 bi-corners if that makes sense)
I learned a lot of stuff in the gearslutz.com forum, Very good information about the technical sides of treatment, and many professional and sound engineers willing to help people. I even contacted with a really known Berlin producer from back in the day, and he was very kind to give advice. They mostly are into pop, rock but anyway very useful information.
And then this site:
(IMPORTANT, he talks about the first reflection zone, wall/ceiling)
I was in pretty much the same situation like you about 2 years ago.
I used to have a lot of other stuff in my studio as well, untill I redid the whole room : new soundblock-windows, cork floor, painted my walls, and threw all the non-music stuff out.
Problem was I had a massive reverb instantly, next to all the acoustic stuff. Apparantly all the crap worked great for reflection and absorption.
So I installed 2 big bass traps in each corner behind my monitors, and a room kit in the rest of the room (absorption and difussion). It worked great.
It wasn't untill I did a small test that I found out I still have a few bass notes that sound a bit louder than the rest.
I would love to install more bass traps in the corners behind me, but there's a door in one corner, and a window in the other, so I might have to install two cumuli in the top corners instead and see if that might help. Even if it's only a bit.
Regarding the ceiling cloud :
they do say on the primacoustic website that the ceiling cloud can help to eliminate standing waves.
"The Primacoustic Stratus is an acoustical device that
suspends above the recording console to control early reflections,
flutter echo and help eliminate standing waves that cause resonant peaks"
so if it can help with that, I'd better give it a try.
There's still no treatment whatsoever on my ceiling, and I'm in an old house with high ceilings.
I mean, I know they don't absorb stuff under 100Hz, but if they break waves reflecting of the ceilings so I have less resonant peaks, than they do help in the bass area. It's just that it helps with reflections, not absorption.
Maybe I should try to install a full trap, but I think they're too thick to fit in my corners. Especially the one with the door.
It's not like I have a massive problem, otherwise I would have heard it instantly, instead of only finding out with a test about a year later.
It's just that I'm anal about sound, so I want the best results if at all possible.