I live down the road from Finsbury Park. It's alright, a bit dirty, feels a bit run down in places, but round there, it all kinda merges into one big area, with Stroud Green, Archway, Stoke Newington, etc etc. Good transport links - Victoria and Piccadilly get into the centre quick and there's the WAGN line as well. Not far from Arsenal's ground too, if you like that sort of thing.
Big mish-mash of cultures - big Afro-Carribean and Turkish communities