The tone of “我又没说你”is stronger than “我没说你”. “我才没说你”needs to look at the circumstance, which is similar to “我又没说你”, but is not a common expression, “我又没说你”is more popular.

Well, the difference between the "又" and “才” really confused. "我没说你" is just a simple sentence about the fact. Generally, "我又没说你" "我才没说你" are used when you express a fact, you are unhappy. when you say "我又没说你"，the answer is complete, you needn't to say anything else. When you say "我才没说你", you are expected to say who you are talking about then.

又和才的使用方法： 我又迟到了。我又吃雪糕了。我又去北京了。又字表示第2次，或者是多次的意思。 我早就吃过早餐了，现在你才吃早餐啊？我刚才去图书馆了。你是人才。

又表示第2次的意思。才能，才表示转折的意思。

thanks a lot to you , i understand now , it's really useful (^_^)