I finally got around to painting a few of the modern Royal Marines I have - which are a small mix of Devil Dog Design and The Assault Group Figures. I thought I'd post this handy comparison shot for anyone who was wondering how they scale up...

From Left to Right: DDD, TAG, DDD, TAG.
The Devil Dog Design figures are noticeably bigger than the Assault Group figures.... Not that I'm going to ditch either - but I might ensure that they all stay in separate sections/fire teams!