Well I can't speak about the Spanish but I use to have (use to have) a bunch of the Brigade French in Egypt range as well as a ton of Perry ones from the same types. In my opinion, some of the ranges mix well size-wise (like the Brigade French Navy figs) but for the French camel corp, the sizes were really different, with the camels from Brigade looking more like ponies compared to the Perry ones. As you probably know, Paul Hicks does most of the sculpting for Brigade and his style is really good but I don't think it mixes well with the Perry's style. In the end, I sold off most of the Brigade figs and have just used the Perry ones, with a number of conversions and alterations. Hope this helps.