What type of bike is best?
Biking
What type of bike is best?

Let's Talk About Kids' Bikes For a Minute. I Don't Know What To Buy

My son is almost 4 now (3.5) and I really want to get him a bike. BUuuuuuuut it turns out there are tons of viewpoints about whether you should get training wheels or no pedals or pedals and no training wheels.
I can see advantages in all 3 options so naturally I'm stuck. He's an athletic kid (as athletic as a little kid can manage, I guess). But he doesn't know what he wants and I don't know what would be better. These bikes aren't super cheap so I want to make the right decision. Let me know your thoughts please!
No pedals
No pedals
Training wheels
Training wheels
“Pedals? No Pedals? Training wheels? No Training wheels?”
No pedals
No pedals
Training wheels
Training wheels
Training wheels
Training wheels
No pedals
No pedals