Basically, the features of Yonex Nanospeed 800 are as follows:
Frame: H.M. Graphite
Shaft: Carbon Nanotube
Made in Taiwan
Based on specifications the current model with the nearest similarities are the Nanoray 300 or the Nanoray 100
The difference between the two i think is that the Nanoray 300 has a slimmer frame. Also, Yonex website only has Nanoray 300 so I'm not sure if Nanoray 100 is available in your country. However price difference between the two isn't that big.