I think one key reason why I like V for Vendetta mroe than Watchmen is that it fels VERY British. Not just because the story is set in Britain, mostly because the comics style it uses is very British - you can tell it was written in short chunks, and that the creators put effort into making each small chunk feel like a satisfying mini-story. This does make it pretty dense when read in collection (which is the only way I've read it, mind), but it's definitely one to savour, not one to binge. Occasionally Moore's showing off with how much V/5/Evey wordplay he can get into the text gets a bit much biut dammit he's just so clever, isn't he.
The film is almost excellent.
The film is almost excellent.