My thoughts seem to echo the general consensus of other posters, Kitchen Nightmares Pommy series is better than the USA series which is miles better than Hell's Kitchen. On H.K. Ramsey seems to try too hard to live up to his reputation and surely they can't be cooking that badly.
On another note, the head chef that was on the episode last night (8/5) was a classic. He went home and knocked up his missus after the oyster shucking and eating contest!!