It would be MY choice. I love the FJR, but slow speed handling is not it's forte'. The RT is very good, as long as it can be traded in before the problems start. The ST1300 is fine, no real complaints, BUT the Tenere….nimble, quick, fast, and can hop curbs....perfect tool for the job. But, s**t can the OE bags, and that stupid telescoping rear emergency light.
EDIT: I forgot one of the most important reasons/feature of the Tenere….rear brake only. BMW used to have separate front & rear brake activation for LE, but not anymore.