Best architectural approaches for building iOS networking applications (REST clients)

Question

I\'m an iOS developer with some experience and this question is really interesting to me. I saw a lot of different resources and materials on this topic, but nevertheless I\

Answer 1

Because all iOS apps are different, I think there are different approaches here to consider, but I usually go this way:
Create a central manager (singleton) class to handle all API requests (usually named APICommunicator) and every instance method is an API call. And there is one central (non-public) method:

-(RACSignal *)sendGetToServerToSubPath:(NSString *)path withParameters:(NSDictionary *)params;

For the record, I use 2 major libraries/frameworks, ReactiveCocoa and AFNetworking. ReactiveCocoa handles async networking responses perfectly, you can do (sendNext:, sendError:, etc.).
This method calls the API, gets the results and sends them through RAC in 'raw' format (like NSArray what AFNetworking returns).
Then a method like getStuffList: which called the above method subscribes to it's signal, parses the raw data into objects (with something like Motis) and sends the objects one by one to the caller (getStuffList: and similar methods also return a signal that the controller can subscribe to).
The subscribed controller receives the objects by subscribeNext:'s block and handles them.

I tried many ways in different apps but this one worked the best out of all so I've been using this in a few apps recently, it fits both small and big projects and it's easy to extend and maintain if something needs to be modified.
Hope this helps, I'd like to hear others' opinions about my approach and maybe how others think this could be maybe improved.