Honestly, there is almost no point in asking about the Asian providers. They all have fake pics; they all say they're, like, 21, with unrealistic measurements; they all say they have been here for a couple of days; and they (lately) always say they are from South Korea (they are not).
They use the same ads on a rotation, some of which are verified, but it's a different provider every few weeks.
They typically don't care if they double book, so they will tell you to come whenever you want to come, then they may ask you to wait if they are with someone else, "Just a moment, dear. The waiter is cleaning the room. The sanitation will be quick."
It's a total crapshoot. I could tell you to go see Momoko and you go to find a completely different provider, possibly even on the same day, if they have more than one here at the same time.
A few recent exceptions: Barbie, from earlier this month, had real photos. And Wendy, who was here for quite a while in December and March, was as advertised.
You just need to go see for yourself and quickly decide if this is worth the money to you.
Good luck.