khaki

i have seen works from Jessica, Sara & Mindy

Sara tends to overbook, she might change the scheduled time even you have booked her early, because she is working for many many studios and has her own clients too.
Jessica is better than Sara in terms of service, for the work Jessica & Sara is very similar because they are both from Charlies.
Mindy is good, but I have seen a few brides using her, they have 80% similar hair and makeup. However that means she is CONSISTENT.

Makeup and and hair is subjective, you'll need a trial.

Hope that helps!