4G is not for everyone. I find it better if you generate your own spin and want control. It still actually does well for spin, but are there better options for that category? - yes.
Example, the Cylcone is a very nice string with good spin, but it is rather springy to me, and it dies a lot faster.
So it is just personal preference, many people will prefer the springiness of the cyclone, but for me, I love the very high control level of the 4g.
I hate spending $17 a string set..hate it. So trust me, I want to find something better that is cheaper.