Maybe this is why I like shemales so much ... It's somewhat unusual for a GG to have a hard bubble butt like the ones you posted (the 6th one is UNFRIGGINGBELIEVABLE). You mostly see a bubble butt on guys (bleh). I am definitely and ass man, and when I see a nice bubble butt on a shemale ... BOINNNG!
But honestly, there's nothing like a HOT GG with a tight, hard body. I just wish they had a raging hardon attached as well - Oh well, that's what daydreams are for!