They are all the same. State mandated curriculum with state supplied videos. Written test you should be able to pass without ever taking the course. 20 round live fire test into a man sized target at 7 yards. You have get your 50% of your rounds on target, head arms and hands count, IIRC.
Honestly it is nothing more than a tax on gun owners who want to carry. Take the cheapest one you can find and then spend $$$ on real training.
I am sure some instructors are better than other but the state constrains what they are allowed to teach and what topics are allowed to be discussed.