Honestly, it's two years. Pick based on location, call schedule, and research vs community strength depending on what you're into.
You're more likely to practice in the area where you finish training because you have so many more connections there so if you train somewhere you feel youd enjoy living longer term, that's a huge bonus.
Don't pick a place you're iffy about even if the institution is the most prestigious place you interviewed at. You're not going to live there. You have to go home and live your life.
I know we are doing this because we're stoked to work with kids, but be real with yourself. Adult psych is hard, but we sometimes see some really really messed up **** in child training. Pick a place where you feel like you could have the hardest day of your professional life and still feel supported enough to go home and show up to work the next day or where they care enough about you to tell you to stay the F home and take a day.
I love research and would love to be at an academic place so I could get back into it. But I think the only true metric of a training program is how invested it is in its trainees and how hard the program leadership protects them when it's required.
Thanks for coming to my Ted talk.