Let me start off by saying when I first got these heads I was really impressed.
The line art is smooth, the Heads sculpted well...just a few little nitpicks but other then that these things are great.
Here is a pic of a Unpainted Cliffjumper head and a Painted one.
I'll have a pic up tomarrow of it on an Alt.
I will mention one thing, some of these heads are huge depending on the Alt you use it with.
I used one of the Ironhide heads on Alt Skids and it's huge compared to the body.
I suggest that head be used for Alt Prime for those that plan to use it for that but it just looks bad on Skids.
Other then the size of these things they really are good sculpts. Just choose what Alt you use them on wisely.
Let's hope the next batch of heads are just a little bit smaller.

TFM