So, when competing there's basically two types of yo-yo's I like to use. For 2A, I like a yo-yo that's light, and fast, and responsive. So if you look at this yo-yo, this is what I would use for a competition, and for 2A. And it's really light, compared to a metal one, and it's really fast, so I can do really quick tricks.
For a style like 1A or 3A, I would use a metal one, because it requires the yo-yo to sleep really long and I can't get a long sleeper with a plastic yo-yo.
For beginners, I recommend a yo-yo that's fairly inexpensive. You don't need to spend no more than maybe $15 to $20 for a good yo-yo to learn on, compared to a metal yo-yo, you can pay up to $100 to $300 for a metal one. It's really hard to learn on.
If you're buying a $300 yo-yo, you can compare it to buying a Porsche, and trying to take it out on a track. If you don't know how to drive it, you're not going to be able to use it to its full potential. The same thing with a yo-yo; you pay $200, but if you don't know how to use it to its full benefits, it's a waste of money.