im using some stuff from IZOTOPE, this company is ill
also check out fxpansion, they have a program that will wrapp a vst into a rta format so you can use your vst's in PT. I just recently got some vst's i converted to rta from AKAI that aren't to bad for screwing with vocals.
wavesdiamond is also sick
go to the digidesign online store and checkout the rta section to get an idea and then go to your local music store and see if they can demonstrate it. at least thats what ive been dooing with a company called long and mcquade.