I'd be interested in this one from two perspectives.
I have a semi-elder vampire character that I ran in a solo game that kind of died. I'd like to run him here, though he isn't particuarly the type of vampire you are looking for (on account of his morality), and he wouldn't be affiliated to any specific group or clan.
I *might* be interested in playing a master vampire, but exactly what type of character are you looking for? I'm not keen on the stereotypical "bad ass" style of vampire in many of these sorts of games - but I can play evil characters.
If I could play both the elder vampire I mentioned and the master vampire then I won't have such a problem with the master vampire being a sterotype.
I do have one problem that may make me unsuitable - I can normally only post on tuesdays and thursdays.
PM me with more info if you're ok with this and I will send you character bios, or if not let me know that as well.