The EP32C6 is a more powerful version of the ESP32C3. For just a few bucks more, there's really no reason to
get a C3. You might want to get one that comes with an external antenna though, for better range.
Pros: user-controllable onboard LED, faster CPU than the C3, although still very cheap (3pk for $23)
Cons: VERY small reset and boot buttons - fingernails required to operate.