One thing I don't think I've seen mentioned yet is the playability of these toys. I'm sure they're more solid in vehicle mode (I've only built mine in robot mode) but when trying to pose Jazz, some of the parts came loose and I had to press the pieces together again - if that makes sense. I don't see these guys fairing well in epic play battles.

That is my only negative thing to say about them! Basic Optimus and Jazz are the same height which looks odd since Optimus has such a skinny torso. The yellow of Bumblebee's bricks is fantastic and so are the silver bricks used for Jazz. I made a little addition to Jazz, I put the left over window pieces on his back and added his name plate to the front (like basic OP). I kinda wish then wheel arch pieces were included in his robot mode, but you can't have everything.