Frankly, I ride an 06 KLR and love it. I carry a set of blocks and rope when I get too far in the back woods that the get offs are 100' down.
(An exaggeration, but you know what I mean.:bike_rider
But, let's get real here.
If your a first time buyer newbie, you need to start off on something that will give you confidence. Unless your a BIG Boy and need the power!
I have a friend who just returned to Texas from a ride to Maine on an XT 225.
He was headed to Nova Scotia but got turned back by bad weather. He can and will ride that thing to the Artic Circle if he decides to. Plenty of bike.
Heck, there is a guy on ADV that is riding a 125cc Postal bike (CT125 to us Americans) from Austrailia the Long way back to England. (Well worth the read)
Many years back and 40 pounds ago I use to ride to and through the Gunnison National Forest in Colorado on my Honda XL 175.
I concurr with the group and reccommend you start on something slightly used and cheap, preferable in the 200 to 300 cc range, then move up to something bigger as your experience and confidence gets honed.
I love to ride and quite frankly can afford any bike I want, but since I have the tendency to take maybe too many inpromptu dirt inspections, I ride the KLR because I don't worry so much about the falls or the rivers. I just dive right in. And I don't need a Brand Name to enjoy myself.
Find a local Dual Sport Group and hang out with them.
Let them help you hone those skills.
After all, lets not fool ourselves, Motorcycles are dangerous.
What you don't know can get you killed. That or a Stupid Chevy!
Definitly take the MSF Course. It will give you the base you need to live with.
Remember ATGATT
Curtis