Honestly I avoid PvP-centric servers altogether unless I'm looking to take out some anger. Their communities are garbage and the being pestered to donate at every turn just reeks. I could care less about their EULA compliance, servers that break it will always exist. A better solution is to educate younger players on how to be smart about the communities they join and how to determine whether or not it's really worth it to donate to a specific server.
And god, Hypixel is just... Odd. I dunno if they've developed some basic form of lag compensation for Minecraft or something, but PvP does not work right there. I can't really tell if the donator kits matter since I can't hit people standing still at point blank range.
You see my friend, thats your horrible internet. I get no lag whatsoever on that server.