At the time i bought this package i did only need the rvox plugin.
Its really fun working with that plugin, because its easy to use and it brings you to very good results in little time.
I knew the Super Tap Delay from my Studies and i worked a lot with it. I really like, but dont use it a lot in these days, but if you don´t have a single delay wich isn´t that flexibel like the STD, you should try it. A lot to discover !
The Renaissance Compressor works very well too, but there are a lot comps out there. But definetly one of the good ones.
The Renaissance EQ, the Renaissance Axx and the Doubler: Cannot say a lot to them, because i didn´t use them a lot, but they work as well.
If you can get the bundle for a small price and you don´t have something else, its a very good choice to start with.