What does a Gradient play like. I really want one, but I am not sure if it’s worth it.
“Worth it” isn’t a phrase that should be used for yoyos. 
The Gradient doesn’t do anything that some of my other yoyos don’t. But it has a different feel. It’s like a more nimble Valor, or a V-shaped full-sized Cascade… but really, it’s its own thing. There is no yoyo on earth that will instantly make you better at tricks. But there are yoyos that you’re happier to play and that feel “right”. If the look and specs of the Gradient appeal to you, why not give it a go?
“I really want to…” says it. Why? Must be something about it that’s appealing to you! Go for it. I love mine.