I have used electret mics from toys, telephones and cheap intercoms. When they have the same size then their sensitivity are almost the same and their frequency response sound the same.
Your preamp with an opamp has a gain of only 2 times, a little more than a piece of wire. You probably need a gain of 200 which can have a volume control to reduce loud sounds.
One transistor might not have enough gain and its negative feedback would be almost zero so its distortion will be very high. Two transistors were used as a fairly good preamp 50 years ago. An audio opamp used as a preamp has distortion extremely low which cannot be heard and is hard to measure. Some old people are used to hearing old circuits with high distortion (fuzz or overdrive) and they like it.
Why the value of your R5 so high? Usually it is not needed unless the preamp drives a shielded cable (100 ohms isolates the capacitance of the cable to prevent high frequency oscillation).
I have never used R2 on all the preamps I have built.
All ICs need a supply bypass capacitor or two as close to the IC as possible. A 0.1uF ceramic and a 10uF electrolytic.