Microsizers Pro vs Microsizers

Hi all,

I currently have an unmodified Zipzaps Nissan Z350 but it is not satisfying. (Not fast enough and batteries dont last too much)

I want to get a new mini RC and this time I really want a fast car.
I searched for them and saw that microsizers are good for me.

But there is a problem:
Microsizers Pro series are good because they have a "boost" button and they can go faster if this button is pressed. Normal Microsizers do not have this function but they are 10$ more in price. (I looked at the prices at www.amazon.com and Pro series are 20$ where normal Microsizers are 30$)

What is the difference between the 20$ Microsizer Pro and 30$ Microsizer ?

Can someone help me choose what to buy ?

Thanks