Tell me, which twisty puzzle would be the perfect addition to my collection?

https://preview.redd.it/oyf4str1fgde1.jpg?width=3280&format=pjpg&auto=webp&s=70bd95425dd568c7a6b55de278c5031c6de7bb4d

Here's my collection!
It's been since 2018 when i first got into cubing, from there ive become addicted to cubing, ya know, the usual, bought a few at first, then some more, and now its bigger than i could think of having

We got some 3x3's, (the one with the broken corner is an old dayan 3x3 thats also not magnetic, actually dont know the name of it)
Then 2x2, two 4x4's, a 5x5, a squan, two pyraminxes, a master pyraminx (which doesnt have tips cuz they broke when i dropped it once) an FTO (love that one), a megaminx and a kilominx, a skewb, mastermorphix and its 7x7 version (hate it, but its nice to see it solved), some clocks, the one from qiyi and a 5x5 from shengshou, a random elemental/periodic table 3x3, a carbon fiber windmill cube, gear cube, and two identical yet differently shaped puzzles that i wish i didnt have

Pretty decent at cubing, I think
But yet to learn CFOP
(crazy how I got a sub 20s with my improved beginners method, also average sub 30 with it)

Anyways
I'd love to hear your recommendations on what I should get next
A nice addition to my collection

Im looking for something fun, something new and unique, that isnt familiar, like the FTO i got recently
Also not something i could see and be like, 'you do that and that aaand solved', not so easy, is what im saying, actually want a challenge

I dont think i like cuboids, neither mirror cubes, just from seeing them
Not the type i'd want to solve on and on

I am looking forward to a 6x6 and 7x7, also a gigaminx
Heard about the curvy copter, looks fun
A super ivy cube, and 3x3 shape mods like ghost and axis

But mainly am interested in that puzzle which makes a whole twist in what i already know, messes with my head a bit but also isnt like impossibly hard like the puppet cube, which i need specific algs for

With that in mind, throw anything at me!
Or maybe prove me wrong that cuboids are actually fun, i dont know
Appreciate any and all recommendations, thanks in advance, love yal