I have to say I'm a little disappointed. Smokescreen simply doesn't look like Smokescreen. The colors (stickers) look pretty good but that mold just doesn't work for him.
Cylas/Silas Breakdown looks pretty good. I agree that a more washed out and even darker blue would look better but the black doesn't look too bad. I have AM-12 Breakdown and having a black version for Silas will definitely stand out more than another shade of blue.
I preordered Silas, but not Smokescreen and I'm still glad I did. I agree with everybody about "not another BB mold" for Smokescreen, but Knockout's mold doesn't do it for me either. I just really hope Hasbro releases an actual Smokescreen mold in the Beast Hunters line (w/out all the spikes, helmets, gear too).