It depends on the player and the yoyo.
The Whip and ONE, while cheap and good, are too light in my opinion. I’d say if you can bind, step up to the Protostar or Northstar, or at the very least, a Legacy II. Once you’re there, full plastic vs bi-metal is kinda minimized for a bit.
But, if you want to carry some beaters for people to start on, get a couple of ONE’s, a couple of WHIPs and a couple of Lyn Fury yoyos. Right now I"m assembling my “bag of beaters” for yoyo meets since I always have kids who want to try but can’t understand why they are not allowed to touch my 2nd run Peak or my other CLYW’s or One Drops(and others).
I also collect plastics to also break things up too. Inexpensive, durable, different. Good way to pad a collection, keep it affordable and make it functional. I bought a Dietz, Legacy II, DiBase and a Starbrite at CalStates. I like to be all over the place!