To update the earlier comparison, both Britannia and Front Rank Reinforcement Pack (Front Rank RP) have been added to the line-up.
To my eye, the Britannia figure seems more on the caricature style of sculpting and the anatomy looks odd to me and quite chunky. Head seems oversized compared to the length of arm and torso. Also, the legs look too short but that could be an illusion because of the deeply bent knees. With knees bent that deeply and head and pack so large, the poor chap may not be able to stand under such weight! He might fit in ok with Front Rank and Elite since they are on the chunky side but might look odd with the others.
The package from Front Rank contained one of the Reinforcement packs of French infantry in bicorne. Really terrific figures with crisp detail and good anatomical structure. These are exquisite figures. The anatomy is better than some earlier Front Rank figures and the sculpting style is very close to Paul Hick's Brigade Games' figures. I have been eyeing these Reinforcement packs for awhile now and finally decided to give them a try. I am glad I did!