3 quads Sync Flow with their Best Tunes (music and PIDs) 

Testing out Betaflight 4.3 RC3 with a different tunes & less filtering on 3 analog quads:
1st quad : DIY Apex frame 5"
motors : 2306 1900KV Emax ECO II
Props : Ethix S4 Lemon Lime
2nd quad : Cygnet 3"
1206 4500KV
Props : 3x3x3 HQprop
3rd quad : Nazgul5
motors : iFlight XingE 2207 2750KV
Props : Gemfan F5135 Floppy Proppy