I can't say it's a favorite meat substitute, but I was impressed with Burger King's Impossible Whopper. The patty is made from flavored vegetable material. I tried a couple of them several months ago and found them quite delicious, although I must say that they tasted more like roasted pork than beef. They were a bit pricey when first introduced, but I think they cost the same as an original Whopper now. 
"The world is my country; all of humanity are my brethren; and to do good deeds is my religion." (Thomas Paine)
