What is the most effective AI platform to work with? Does it help if it is also "fun"?

Hi peers,

I believe that software should not only be effective but fun and easy to use. In terms of AI we have a plethora, of free and purchasable AI products. E.G. Google Tensorflow, Siri, Alexa, mainly making use of Python, and other AI languages. 

Let me clarify what I mean by "fun". It isn't fun when technology fails us, and as technology experts, we are the first to complain about poor technology (even though we often don't get it right the first time either). So we can often relate the "fun" aspect to the efficiency and power of the software.  

So, for you AI experts out there, I would like to know what is the best, easiest and most efficient platform you worked with, or which AI product did you enjoy working with most and why, regardless of power, efficiency, etc?

Am I even asking the right questions? Please correct me if not!

Thanks,

Andy