Heyy xD Leverkussen is a great team too, and Schalke 04, and Dortmund too... well the truth is that all teams from germany are competitive, Mainz won a league too....
...but, Bayern München the best for me. Think that Dortmund exist's at now, because Bayern saves it to dissapear, like did with other 4 or 5 clubs of the Bundesliga