I use ReaComp all the time, mildly, where I find it very transparent.
ReaEQ is my usual EQ plug-in, with its spectral graphic interface and ability to add multi bands.
ReaVerb is my usual reverb plug-in, I have a file of 500+ IRs to use with it.
I use ReTune often on my vocals, again, 'mildly', with an attacktime at least 175 ms, it is very transparent and not unnatural, as I find Melodyne can sometimes be.
I used ReaPitch a couple of times this past week - I was adding a piano part to a recording where the person was using a capo on her guitar and that had bumped the tuning up 20 cents from natural pitch. And then yesterday I used to add a subtle (wet around 75%) octave to a bass part that I felt did not have enough high end to it.