Before you buy a Rokon be sure to ride one. They are an amazingly capable OFF road bike. They can go just about anywhere. They are slow and do not have the suspension of a modern motorcycle, although the newer ones are offered with a front suspension.
They are very fun if you know and respect their limitations. If you own one, it really helps to be somewhat mechanical. There are pins and keys to break, and chain adjustments to be made. I personally like the older 2 stroke bikes because they are lighter, but I also have a newer honda powered bike that is very reliable.
I love mine and have met some great people over the years because of them. (Rokon rides). If you need/want to go where there are no roads they are the motorcycle for you. If you want to ride on the street and do some off-roading, I believe the TW200 is a better fit that is nearly as capable until you get to the really rough stuff. If you are considering one, please ride one to make sure it is what you think it is. You are more than welcome to test ride mine if you make it over to my neck of the woods,