Hey Mike,

Great tarantulas. The one on top, however, is not a "Mexican Red Knee". It is a Brachypelma emelia or "Mexican Redleg". A great species and typically pretty docile. They get to a decent size and are stunning (in my opinon) right after they molt. I've got one myself. Mine is unfortunately a male though.

Here's a bit of info on it that I borrowed from my friends at e-spiderworld.com:

Brachypelma emilia, Mexican Redleg. One of the hobby classics. The black triangle marking on the carapace is the best way to separate this species from other Brachypelma. The abdomen is black with the middle part of the legs red/orange and the rest of the leg black. One of the longest living tarantula species with females living 20-30 years. Rarely aggressive but sometimes prone to kicking urticating hairs. Terrestrial species that generally lives on the ground.