ve almost the same problem. I applied to the MSc Finance and Investment course to Durham and others, but not to Edinburgh and Nottingham. Exeter I HAD to apply for MSc Financial Economics.
From what I have researched and asked in forums, Durham leads your group of choices based on the rankings, the attrativeness of the collegiative system or Oxbridge style, how long it has been running and how people talk about it.
Personally I like Durham the most and that is my first choice too. I also liked Edinburgh and Nottingham but couldn't applied to them. I specially lke Edinburgh because of the city, I had a chance to go ones and its incredible. As a sustitute I applied to strathclyde and glascow.
Also, I think, you may want to rank them considering your own personal needs. Like in my case, I am from Central America, and not many employers have heard of all of them. Our ignorance and distance has limited us to consider only US universities and the most famous ones in the UK like LSE, Oxford and Cambridge (sad, very sad). So considering this, a university from a well known state or city (that has the same name) helps.
About the CFA, I do not know much and I don't consider it critical for me. I say many schools with the same CFA partnerships, almost all covering 70% of the curriculum. I am not sure, but it seem to me that it wasn't that difficult to sale and some schools even used it as selling point. That killed it for me. but I guess I will still take one with the partnerships for a just in case.
I believe hey are all at the same level academically and based on prestige. The differences might be minimal. Maybe Exeter is a little below the others. Maybe you need to evaluate them now based on your own criteria (average age, career prostpects and business ties, the city, track record of the program, and how well is it know in your country or community).