[Dorian Green]

Heya...
First of all and no offences, to achieve pro vocal, your signal chain must be very good which means : Very good large condenser mic, good wire, Very good preamp and Analog to digital converter.
That done you'll have a very clean and rich base to work on.

Now about the Eqs and Comp, the digi products are not too bad for minor corrections but if you need a colouration of your sound you'll have to get some Waves, MsDSP.

I personaly use the SSL collection by Waves, the settings are very sensitives but the only big problem is that Waves Plugins are quite expensive.McDSP plugins like filterbank are very good deal.

Don't forget to give a try to the A.I.R plugins included in all PTLE 8+.They sound really good and are not greedy.

I'm sure the other guys have other brands in their mind...