Apologies just re read. Mimi sounds a lot more high energy and would be my preference, from your intel she does rimming and OWO and Nini just does OW 
Nini is definitely on par with Mimi service-wise. I've seen
Nini several times now and get OWO, ball sucking, kissing, and very good GFE service all around everytime. ("OW" was either a typo, or I got more on following visits, I can't remember.) Rimming cannot reasonably be expected; it's a rare service and something that I normally get only from just a handful of specialists.
Let me know if any intel appears for Mimi or any more in line service wise
If that's your cutoff, you're going to be waiting for a very long time.
I've spent a lot of time mapping out oriental places in Cambridge and throughout London, so I know what's on offer. Finding an oriental in this age range is the biggest challenge. The only other 20-something girls I've consistently found were from the Fabei group, but they also had consistently poor service. Not only a lack of kissing, OWO, etc, but poor attitudes almost approaching Romanian service levels. And they were more expensive to boot.
If you don't mind punting 50 year old ladies there's Rainbow Candy, Cherry Flowers/Yoyo. Too old IMO, and you're still looking at mostly vanilla service.
If you increase your search range to include all non-oriental options, there's still very few options in Cambridge, with some weeks zero decent options at all.
Basically I'm saying it's important to be realistic, especially given the punting wasteland that Cambridge is. Having a consistent option for young orientals with a good attitude is a good find, especially in Cambridge.
