Those Comanches raised some heck for a good long while and were succesfull at stopping the westward expansion moreso than any other tribe. Good thing they didn't have the technology and numbers, they were killing/ fighting machines.
Currently reading this:
If you always perceived the Indians as savages who lived from hand to mouth and had no political or economic concepts with which to guide their decisions, this book will change your mind in a big way.
I'm only about 100 pages in, and it is clear to me that Comanche presence was every bit as important as the activities of the French, the Spanish crown, and the British North American presences. The Comanche were a tremendous force in shaping the world we live in today. They thwarted and undermined Spain's ability to control New Mexico and Texas, and I would suggest that the resources consumed in combatting the Comanche may well have weakened Spain's grip on Mexico itself (I'm reaching a little there, but as I get further into the book that bit of speculation may be vindicated).
This is not light reading, by any stretch, and isn't what I would call entertainment. It IS, though, one of the more enlightening bits of history I have ever read.