I love fresh strings with about a half hour break in before the get played. When done right, and balanced tuning is employed, [ neck tension is balanced to the amount of pressure exerted by each individual string]. Finger pressure needed will be increased because of fresh tensile strength but so will the equality and quality in over tones to get the guitar to ring as one musical instrument. Furthermore it eliminates string breakage fear while one is playing live.
I always pull the new string from the 12 fret the middle as far as I can to make sure it is not nicked at the saddle or manufacturing defect , check for jamming at the neck and keep bringing the string up to the tension I will be working it at. I do this 3 strings at a time to make the tuning range and neck and neck tension in normal parameters.
Then I play the heck out of the guit for 10 or 15 minutes do some micro tuning and if the axe doesn't get banged around in transit, it SHOULD stay in perfect tuning for at least 3 or 4 hours. I call those the golden hours.
After that string wear from frets ,finger dirt, and loss of tensile strength cause strings to wear out. Some blues players love old strings, Ask me why next time.
Any way Good luck.