I was originally going to write this as a bias towards toys from my generation compared to those that my 4 year old son, Jagger plays with today. I had two Transformers, Snarl and Jetfire to be exact, that I loved, but little pieces broke off — Jetfire's tail fin and Snarl's foot broke off. Now it's tough to pinpoint the cause, whether it's being clueless in transforming them or they weren't built rugged enough for the abuse of a 10 year old boy.
Yet Jagger's Transformers, Optimus Prime and Bumblebee, have held up in the 1+ month he's owned them. When his Transformers stand next to mine (only Jetfire because I don't know what happened to Snarl as last I saw him was on my dad's office shelf 20+ years ago) you can see the difference in plastics used and lack of metal pieces. Maybe the materials are more durable, despite not looking as sharp as mine. I guess we'll find out in a couple months or one day when he gives his Transformers to his child.