I am very low hr student PPL just started flying after 7 yr break (now have money!). I am very happy with my instructor. Just had a 2nd and 3rd lesson this week and I am now taxing on the ground and doing all the startup etc. I tell him when he can 'call for start' and 'call for taxi'. In the air he clearly follows IHC/YHC even it's to demonstrate a very minor correction. I already feel am in a proffessional environment with him.
However, compared to my instructor from 6 yrs ago, they have different teaching techniques. Never in the past did my instructor placed emphasis on keeping the aircraft in the balance when adding power/turning etc (using rudder).
I will stay in one instructor (the most important thing for me) but I think it's healthy to change once in a while, but maybe only for one lesson.