Sgt Scream (also known as Chris M.) runs an excellent blog called Small Scale Operations, which focuses on 20mm gaming in the modern period – especially the Middle East. Lately his blog has become a cornucopia of resource information on the period. He publishes regular round ups of new figure releases, as well as comprehensive reviews of terrain and models to accompany them. He even takes time to provide book reviews and recommendations. However it is the following post which jumps out in the context of this blog:
In this entry, he provides a scale comparison featuring the following metal ranges:
The comparisons also include one plastic range: Caesar.
The comparison is certainly worth checking out. The full blog can be found here: