I don't use Margurite Pattten myself, but have a friend who swears by her. I was leaving home when I was given my first Delia's by a brother who worked for the BBC and so got them with a staff discount, hence also the Ken Hom and the Madhur Jaffery. All of the books he bought in those days were BBC books. Any way said friend was given the Margurite Patten book at the same point in her life and thus our respective loyalties were born.
Personally I wouldn't recommend Elisabeth David for a beginner, I do think she's great, but I found that if you don't already know what you are doing her recipes are rather daunting.
As for cookery book addictions I don't have a problem, I could stop buying any time, I don't need them I just enjoy them......
Though I just went and counted at my kitchen stuff (as opposed to the big glossies that aren't used much) and was reminded of Lindsay Bareham and Mollie Katzen. And no I'm not going to admit how many I have, I don't have a problem, why would you want to know unless you thought I have a problem.....wanders off gibbering to herself....
