It's the impulse buy of the year, and so very worth it.
Choosing between and the platform isn't an easy choice, especially if you're a big fan of Google's services and already have a kicking around. There's a lot to consider, and a lot of people are trying to figure out which is best for their needs while surrounded by deals and sales and new features being added every day.
I say don't worry with either of the big expensive speaker assistants, and start out with instead.