Hi guys. I'm planning to buy new wheels. I have a 15" zelhendorf set. I wanted to change those for enkei 17". Since there is not a official enkei dealer in my country I don't think that would be possible. So what do you guys think??. What is the best wheel brand in the market.

OZ maybe?

It depends what you think of as best, best looking? or best performing ie light weight and strong?
You cant go far wrong with the big brand JDM wheel manufacturers, Rays/Volk, Advan, SSR, Enkei, Weds etc, though they are generally a lot more expensive than most other wheels.