I use the ones I buy.
Why do I use the ones I buy?
Because when you are a stupid thief with 200 different plugins to choose from, you never learn how to use those plugins. Instead you hop on the internet, because you have stolen so much shit and you have no idea what those plugins are capable of doing and ask:
"Anyone would like to recommend me on some good VST's that are for vocal effects such as hooks and such?"
If you had purchased those plugins, you would know they are more than adequate for mixing vocals. Stealing more plugins are not going to improve your shitty vocals. Nobody I know of would make an investment like that without having at least a little bit of a clue as to what they can do with them.
I recommend that you actually BUY a small set of plugins, learn how to use them, and stick with that plan. You will actually learn how to master those tools instead of noobing it up like the rest of your peers. What will happen is you will appreciate the investment you have made and actually put the time into learning how to use what you have bought.
No fucks will be awarded if you take offense to this. Get a small setup of plugins and go with that, even better use the included DAW plugins to start and then you can get an idea of what you want or feel you are missing. Contrary to popular belief, plugins that are included in most daws are more than adequate for mixing songs.
/rant