It's been said, but I'll say it again - it's all about the preparation. Take care of a dead antelope and you'll have great tasting meat. I've shot them in the wheat, native grass in a river valley, on the plains, and out of a sage flat and have never eaten a bad piece of antelope meat. But I'm fanatical about meat care, which I personally believe is the most critical step in ensuring quality meat on your table.
I've heard that "gamey" line a lot, but can't remember ever experiencing it when eating something I killed, processed, and prepared (except from a big ol' boar hog I killed in CA, in the wheat, hung in the cool, and processed by a reputable outfit with which my trusted hunting partner had years of first hand positive experience).