Definitely go the 650 - the 1100 is way over the top for what you need, especially if you are inexperienced. You can tour just fine on a 250, and on the autobahns, (1% of your journey) you just don't on a 250 - there are plenty of other roads that are much more pleasant anyway.
The 650 will handle the autobahns just fine, plenty fast enough.
I
guarantee you will be much happier on a 650. I'd take the 650 myself for solo riding. Two-up, the 1100 for sure.
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Grant Johnson
Share the Dream!
at:
www.HorizonsUnlimited.com