I have not explored the AMP world but am interested in Asian providers that are more upscale ($600 and up). Any recommendations? I’ve looked around but there does not seem to be much in that category and below around $1,200.

http://www.theeroticreview.com/reviews/ana-davis-9174101914-376710

You haven't been searching hard enough lol

Ana Davis is great and so are these ladies that I can vouch for

Kim
https://www.theeroticreview.com/reviews/kim-384855

Aria Dior
https://www.theeroticreview.com/reviews/aria-dior-378810

Sexy Asian H
https://www.theeroticreview.com/reviews/h-376094

Then there's others that I've seen reviewed or mentioned like Kate Chou, Jade Wang, Nicole Doshi, Bridgette Belle

Don't care how you spend it. No difference between $5000 hookers and $200. It's just a mind fuck to part you and your $$.

Aria Dior is great!

The AMPs are one of the few providers out there that caters to the working man. With that being said, the ones I know of, the highest limit will be 400 with the add on and extras that will come to 600+. For example, the high end ones will have a JAV star, college student or someone famous from their country then it will be like plus 200 for the extras or 600+ to an outcall to a Manhattan hotel.  

AMPs are the only providers with a tier system that clients can choose from and not some forced, recommended or mandated time for new customers like these non-Asian providers do. Showers are usually mandatory which is a good thing for the provider and client. There is usually no guessing games with High End AMPS. With non-Asian providers, they will charge you anywhere from 400 to 1000 bucks and will have severe restrictions on services like no bbj, DATY, GFE etc.