I've used an ORCA VX3 for several months and just recently switched to an LRP Flow with their 5.4 Stock Software in my 17.5 TC. In my opinion:
- ORCA VX3 - Linear power delivery and braking. Very precise feeling. Finer adjustments via the program box.
- LRP Flow (w/ v5.4 software) - Progressive power delivery and braking feel.
Both ESCs feel smooth. But, because I don't have much finesse in my throttle and braking control, the LRP is the better fit for me.