I was asked to do a post showing size comparison between Front Rank 100YW Archers and Games Workshop Bretonnians. I have no unpainted figures so cannot compare raw metal/plastic so have to show painted versions. On the whole I think they work together very well. I can say that GW and Front Rank horses do not mix. GW horse – all plastic at 5th/6th Edition – are big. Front Rank riders can fit on GW horses (see this post showing Front Rank cavalry mounted on GW barded horses).