CC, as you most likley know there are 2 operators with XLSes (
AFAIK) in EDDS, the figures you find on ppjn seems to be about right regarding the base, I guess the top pay isn´t that high on the XLS as posted there.
As for the other operator, they used to have contracts with somewhat lower figures (not that much) and you´d have to join with a rating. That's how it used to be, I´m not 'current' in the Stuttgart scene any more...
Stuttgart is one of the most expensive places to live in Germany, bear that in mind.