Decision to change NoSQL platform should not be taken lightly. Transition from one to another takes a lot of planning, effort and time. Anyway, if you do need to choose a new NoSQL platform, here is the table of the CAP options/guarantees that you get with each of the NoSQL platforms. Choose wisely!
|CAP for NoSQL platforms|
Big Data with Cloud Computing: an insight on the computing environment, MapReduce,and programming frameworks by Alberto Fernández et al.