Hmm well in terms of Dönerbuden in HH i've sorta only hung around my neck of the woods in Eppendorf... and i agree about the "which one"...
I've had Döner in the following places:
Hamburg

Oberursel (where I grew up, a short ways out of Frankfurt), Frankfurt, London, Munich, Calella (close to Barcelona), Madrid, Ravenna (Italy), Waterloo (Belgium), Brussels, Bristol (UK), Bath (UK) and probably a few more that I can't think of...
the best place still is Oberursel. and it's been at least 4 years since i had one there.
happy days!
i'll send you one via dhl next time i'm there.
