Finally, the prayers of many fpv pilots were answered, Racerstar has come with an all in one solution that that incorporates F4 flight controller, 4 in 1 ESC with BLHeli_32, OSD and current sensor – TattooF4S
Is is currently in preorder on BangGood and it sells for $75 which is almost equal to the price of buying decent F4 FC and 4 in 1 ESC.
This one seems a super solution for neat light builds and also a much better solution for having current sensor than the one on Omnibus boards.
One of my concerns is that it is rated only up to 30A so you should be careful with the choice of motors and props.
Here are some specs:
BLHELI_32 4in1 30A+F4+OSD
Peak current(10s): 35A
Input: 2-4s lipo
Output voltage: 5V/2A
ICM-MPU6000 Accelerometers and Gyroscopes
1* 30A 4in1 ESC built-in F4 flight controller
1* power cable
1* bag of screws