My first 2" build I wanted to be MultiGP micro class capable, so built with 2s max in mind and went for lighter weight but durable. They were out of 2.5" frames, so went with the 2" and 10,000kv.
I wanted cheap, but didn't want to compromise on the camera since i want to keep same FOV as my bigger race quads. Going the V2 allowed for battery voltage monitoring when is needed on these little packs with the 10,000kv motors. It will eat up a pack pretty quick if I'm getting on the throttle.
running the Pik BLX clone and separate racerstar ESC made the build more tedious than a 4-in-1 stack, but it was WAY cheaper and if an ESC does go out I'm not up the creek. One of the racerstar ESCs was D.O.A, but the others seem to be running OK on the 8 packs I've ran through is so far.
First time using this cheaper receiver. Very easy and clean to build with, but haven't pushed range to compare to an FrSky XM that wouldn't have cost much more.
I have some connectors to mount some LED lights to the standoffs when they come in. Using the D-Shot ESC beeper on switch that is now in betaflight 3.2 I was able to leave off the regular beeper. It's worked well so far finding the little quad.