Help me guys to decide on which yoyo to buy. I know that they have big differences with each other so
help me. And tell me why did you pick that for me.
Thanks all!! 
Really depends on what you want the yoyo for. The Popstar is really more of a novelty yoyo. It’s really really small and very challenging (and rewarding) to play. Good to have as part of a large collection but not really great. If you’re after something to learn on and make progress with, the Echo would be the better choice.
Yuki