$400 - $500 without all the DJI nanny state restrictions = Fimi X8 - then which ever model works best for you. I have the SE 2022 V2 and like it. Can also get the remote controller with the built-in screen, very convenient.
No experience on Wilson frames. Have a Nelson on a Kimber Pro Carry (aluminum) frame running a suppressor with approximately 3k rounds and not a single equipment malfunction. The Nelson just works like it should
Downward target angle of 20 + degrees and keep the distance no closer than 5 yards. Also remember, you're asking a serious question in a public forum...
I have the flexible with phone setup. It's not a professional setup, but worth the cost. Plus it's fun to prove someone wrong when they swear that the barrel absolutely spotless