hi norton,
i would agree with sqwkkfr...but not totally with his comments...particularly about an instructor taking exception to a student flying with another instructor...however the other reasons he/she offers are all valid....however when you have progressed it is no harm to fly with others if the need arises ( as often it does...an instructor is away or leaves )..but by and large best to stick to one. he/she knows what you have done and what you need to do ( training files can only convey so much )...and particularly your weaknesses.if you find you get on well with one person and you are learning then stay with that person at least until you are well into the course.
it happens that for one reason or another you have to fly with a different instructor on an occasion...and suddenly you find that you learn better from that one of you like his/her style more then there may be a reason to change at that stage...but its when you are more advanced and can tell the difference.
so...off with you...and enjoy..
gear up.
the dean.