Description: These sell themselves as high(er) class kyabakura. You should expect to find more staff, who are usually better educated, make better conversation, and serve better drinks.
System: New Clubs have the same system as kyabakura. So expect a Set time of 45-60 minutes.
Budget: Again, see the kyabakura entry but add 40-50% extra. A 45-60 minute set will probably start around 10000 yen and almost always has a 20% service charge associated with it. Plus alpha. Drinks are more expensive, bottles are more expensive... everything is more expensive!
Making friends: Expect even more involved sales tactics than a regular kyabakura. Again, the goal of all this is to part you with your money by making you buy into the fantasy.