Save your money for RX7. There is soooooooooo much more you can do with it. Overall noise reduction that outshines most others (waves is way down the list), dialog noise reduction that works by itself “live”, pulling specific sounds out of a recording (I used it to yank ships bells out of a wedding video on a dock UNDER soft dialog, worked great). UNMIX music - yanked the vocals out of a track for a talent show singer- worked amazingly well. Removes reverb- adjust the amount of reverb (or remove it) out of any mixed track. Even the de-clip, de-crack, de-hum I use all the time (live sound recordings, film production tracks). I’ve gotten so much out of the standard version (expecially in RX7), I’ve never had to upgrade to advanced.I'm currently deciding whether to get the Waves restoration bundle (noise reduction type plugins) or the Izotope RX7 noise reduction plugins, but the Waves plugins are so much cheaper during this sale.
From memory, I've seen every Waves plugin for $29 except for the WNS noise suppressor plugin and perhaps some of their surround sound plugins.
If you clean up tracks at all, or like to experiment with taking mixed songs apart, RX7 is an unmatched set of tools. Catch a sale (they happen now all the time, almost as much as waves) and you won’t be sorry.