I'm told Rockafeller is the way to go, especially if you don't really like oysters, because the spinach and cheese and sauce mostly cover up the taste of the actual oyster. I would have to agree. The only adjective I can come up with for the oyster itself is "squishey". I'm not sure what it tasted like. But I put everything I found inside the shells onto a piece of homemade bread, ate it, and found it quite tasty!
Definitely a worthwhile experience. I'm not certain if I'm bold enough to try them raw though - think I'll just stick with Rockafeller.