Nice report and I'm glad you had a good time! I just feel I have to chime in on the girls. Lately there really isn't that much difference between the clubs...and I mean that quite literary. When I head down to Frankfurt, I usually spend one day in Oase and one in World. In my last visit in december I saw quite a few girls in Oase that were in World a month earlier and the other way around. The saturday in World there I bumped into at least 5 girls that were in Oase the day before (even sessioned with the same girl in both places).
I would agree that Oase in general has a bit better looking girls (so if you have only 1 day to visit I would go here); but if you have a second day I would go to World as well. It's a nicer club and the quality of girls isn't that far off from Oase; you might even see some of the same girls.