Bike recomendation, trying to make up my mind

[Dj Jean T.]

I've been comuting for almost two years now on a honda 125 dual sport 4 stroke bike, I really want to start travelling in my bike. My guess is that the longest trip will take but 1200 miles at the most and 70-80% will be in regular condition, the rest I hope will be offroad, Im really into exploring so i need a bike taht can handle it, Iv'e been looking at the ktm 640 adventure and the v-storm 650, the reason I've considered the suzuki is because i also need the bike to comute, and since a small % of my riding is going to be offroad, also im 5'69 and the ktm is very tall, but i want to know that the bike im riding is going to take me through any back road I want to explore, and can handle sand,I have a lot of sand here, I am in the caribean coast oc colombia. so the deal is, the suzuki is great for regular condition roads and comuting, and the ktm is great for offroad, I'd like to get some opinion's so i can make up my mind, also i really like the bmw f 650 gs, but it dont know just how reliable it is.

Thanx