Use any kind of outlet you fancy. The current drawn depends on your equipment, not the outlet, and probably doesn't exceed 3 or 4 amps except for a surge at turnon. If you short out the outlet the 15 amp breaker (or fuse) will open. In other words, an outlet rated for 20 amps will not increase the current drawn through the 14 gage wire from your service entrance.
Upgrade Receptacle on 15A breaker
I have seen suggestions for 20A upgraded AC wall receptacles to receive the power cord, but shouldn't a line with a 15A breaker go no higher than a 15A receptacle? Same answer if wire used from receptacle to breaker is 12 guage? Assume location in is in US. If 15A receptacle is required, what is a good one?