Thanks for two thorough and balanced reviews - very helful. Both clubs sound great for their own respective reasons. My only disappointment is to read about your less than positive reconnaissance of Villa Vertigo. I love their luxury concept, videos/pics on the website, and the promotion of it on TER (from which I wouldn't have otherwise discovered FKKs before I did).
I may try VV anyway while there in August, just to ensure I give them a fair shake. Will report back.