I think the Super Tenere in massively underrated. Personally I found the '14 Super Tenere ES more comfortable than the new '14 BMW R1200RT LC (my previous ride) on the highway. I ride 90% on the Tarmac. Despite the RT's claim to be the ultimate sport touring machine, Tenere's long suspension travel , upright sitting position and quieter engine makes a big difference. (I had to wear ear plugs on the RT but not on the S10).
S10's engine may not have the same number of horses of a big sport touring machine but for me, the S10's power is more than adequate for highway cruising. I have ridden it at 180 kmph on long stretches and have had no issues with stability or vibration. Moreover, knowing that a dual sport can be ridden on any surface gives you that edge over any other sport touring or street bike. But it all ultimately depends on what you are looking for ....style, speed, looks etc. I suggest you compare the technical specs of all the bikes, evaluate your road trips in the next few years, and then decide which one suits your needs most.
Just my two cents worth....if it helps.