Might I suggest but one more historical miniature manufacturer?
Take a look at eBob Miniatures. He has three main historical ranges: Stalag Luft III is a WWII range of miniatures that can be used on a board game to reenact the events that transpired at the German PoW camp, Stalag Luft III (which are the contents of the movie The Great Escape). Next, there is a very popular range of miniatures that fought in the Scottish War of Independence, known as Rebellion; this range features full wargaming rules, and consists of Scottish, English, Welsh, and soon to be Irish forces that could all fit nicely in the LotR range as Rohirrim, Gondorians, ruffians, Dunlendings, or the like. Another range is Tribes of the East, which consists of Mongol hordes, who could fit in nicely along Khand. eBob's Fantasy range also has some sets which were clearly inspired by LotR, you'll know which when you see them (there used to be more like that too, but they sold out or were forcibly removed). I'd like to have more eBob miniatures, they are amazing.
When you get Perry Miniatures, would you mind taking pictures and/or reporting your opinion of them? I really like the look of the American Civil War range, but I want an opinion from a noob who would not be biased towards Perry before I invest.