This is my main basher-quad. Made out of random parts - some are quite good, others are total crap - but after a lot of tuning it flies surprisingly well.
The only parts that still survived since day 1 are the FPV camera, the reciever and the motors. And the GoPro of course, which has a broken screen so I am blind when it comes to changing settings (I had WiFi off when I cracked the screen).
The motors are pretty banged up by now but with RPM filtering they still work fine. I started running them on 6S with a 71% motor_output_limit in betaflight. Works fine, and the ESC from that cheap Mamba stack seems to be pretty reliable aswell.

Here is it's story:

It started it's life as a TBS Source. The AKK VTX I used worked pretty well, until it died in crash. I replaced it with the RushTank Racing, which I sticked on the top plate (make sure to remove the stickers on the heat sink, the carbon is actually pretty good at removing the heat). Since I hated those stupidly stiff pigtails, I went straight to a MMCX-Lollipop antenna. A good amount of electrical tape made it stiffer so it doesnt move around and gets caught in the props.

At some point the gyro on the Mamba F405 stack had enough of the crashes and started having really weird noise spikes. I replaced it with a Kakute F7 (unfortunately the ICM gyro version) from a Kakute stack that was intended to go into my Hyperlite Glide build - but ended up not fitting in there because of the foam-mounted gyro (Kabab, I am sorry for trying to fit all 30x30 hardware into your build that is designed to have everything seperated).

Eventually I had enough of the way too heavy and chunky TBS SourceOne (I mainly fly over fields anyways) and swapped it for a cheap AstroX 5 clone that was collecting dust in a corner. It's about 104g (so I shaved about 40g just by swapping frames) and the carbon wasn't too bad - it was cut in the correct orientation and after a bit of wet sanding the edges it ended up being pretty nice and very stiff. I noticed the weight improvement immediately, it felt a bit better in sharper turns and propwash handling improved visibly, apart from that the throttle control improved quite a bit. It is now at adecent 610g AUW with a 1000mAh 6S pack.

A few days ago I managed to knock off a capacitor on the ESC, so I replaced it with the same ESC from my first quad which coincidentally fell out of a tree 2 days before that (it was stuck up there for almost 7 months). On the damaged ESC I ran JESC, now I am running JazzMaverick's firmware. I don't feel a difference at all.
Oh and I am using HQ 5.1x3.1x3 props after I ran out of 4.3 HQ props. They lack a bit of top end but I compensated for that by increasing the motor output limit to 76% (which is basically increasing the KV of the motor).

I will probably change those stupidly tall standoffs for some shorter ones and get a proper GoPro mount. And if I can get my hands on the same Emax Eco motors but in 1900KV I might swap them aswell. The noise of the current bearings could impress a rattlesnake.

And shoutout to krunked for helping me with the pid/filter tune! It flies pretty damn good now.