Originally Posted by montesa_vr
If you do, sit on the 1000. It's the same chassis with a different seat. Then you'll know exactly what the effect will be of swapping seats.
When I was shopping for a commuter bike I thought the V-Strom 1000 was one of the most comfortable bikes I had ever sat on and I'm 6'3".
I might also add... Riding 2-up is the one time you need liter class power on an Adventure Bike. All other times smaller and lighter is better. If you are an experenced rider that like to let it rip, having a passenger on a 650 takes the fun out of it. While my 950 will still thrill 2-up.