Server in Asia

I wonder if rso.bg the best server provider in Asia is?
Are there any discounts on their services?

I am not sure about the host you are asking about, but still can recommend you to look at some alternatives.
Say Cloudarion.com would be a good place. Their goal is to provide quality infrastructure hosting in world-class data facilities, at a cost accessible to enterprises, small businesses, and end-users alike.

Have a look at servers from hostingsource.com and kvchosting.net.
Absolutely incredible. Moved over to them and couldn't be happier. Really solid tech support team, high speed servers, and great customer service.