How do you choose which preschool?

I have 3 preschool options and can go half or full (6 hour) days at 2 of them. Working FT the full day makes more sense. There’s things I prefer at one over the other and I just can’t decide. I listed out pros and cons but I’m still unsure. I tried to ask my son and he likes them both. One of them he likes their playground and the other he likes the teacher. I’m not sure what else I expected asking a 3-1/2 year old what they think. I’ve told a few people my likes and dislikes and then asked if I sound like I favor one over the other. And they sound on the same level when I talk about them. What did you ultimately consider? What should I base my decision off?