Funny enough.
I saw both K Sua and C Kiki and didn't find their service all that amazing (good but not amazing).

Kiki gives that stick out your tongue kiss that so many Chinese girls are fond of. It's a real mood killer.
In terms of body type, she is almost like Jin. But I found Jin to be slightly prettier than her.

K Sua was quite good too but a little cold at the start of the session. It was end of the day though and I can imagine she must be tired and not all that chatty.

I intend to see them both again just to see if I can get the best out of them ( at least for me; for others, they might already be the best ). Going by OP's review, I might wanna give Alexia a chance too.