The number in the model refers to the displacement of the engine. The F650 is a 650cc single, and always has been. The F800 is new, and it's an inline twin. They're both great bikes, but they aren't even remotely the same engine. It's still not up to KLR standards, particularly since you can get a brand new KLR for half what you'll pay for the Beemer.
And parts and service? Beemer will bend you over. And this is a dual sport. It's gonna get dropped in the mud, and the snow, and the dirt, so those things come up.
Observe.
http://img457.imageshack.us/img457/8273/18falllk0.jpg
Note the fancy new KLR behind me, not tipped over.
All the GS's are heavy. Heck, all the BMW bikes are heavy. I rode a 1200GS and I'll be honest, the boxer motor was pretty uninspiring. It felt like I was driving a Honda CIVIC. The K1200R, though. Now that was entertaining.
Someday we'll win this thing...
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