0. EQ? preferably not at this stage, unless all tracks suffer from the same deviance, which can be with life recordings in example.
But you know that
1. PsyQ
2 Optimaster
3. Vinco
1. PsyQ:
Process low and mid/high: about 35, Bass 35 or more, Mid/High to your needs.
Proces HiQ: 30 or more, Shaper max (or less, grabbing lower hi's)
Stereo: about 34, preferably not more as it's fatiguing on the longer run.
NB. PsyQ apparently is 'user level', which is good, as the Optimaster needs the overhead space to do the job required (as I see it).
So check the 'over' leds of in and out.
2. Optimaster: just use presets to start from, or use the learn function.
Use of presets gives guarantee of cohesion between all parameters, but you could make an A/B comparison of two mixes of both strategies, to get an idea of the plug's working.
You want it soft and smooth, or punchy, hot and 'radio', or even over the top, just choose the right preset (name): attack and release time values will be close then, just like the rest.
Having finished that, you might play with the threshold of each band, from the graphics even.
Watch the green leds of gain reduction for the band, and listen, you can hear what you're doing.
You can even do eq-ing this way, like pressing back the highs.
3. Vinco: the finishing touch for presence and that little extra but smooth pressure.
As known the Vinco is modelled after the classic 1176 Limiter, actually a compressor, which is said to be used also as master compressor.
So far I didn't check if it also colors the sound without applying compression, as the original thing is said to do, and I just bought the UAD plug

'Ratio button 2' on Vinco isn't original, but it's there
I love Vinco, I got used to it to have it in my mastering chain, as it's always a nice reward of that little extra while it looked you'd max'd out already, even if you had a softly compressed mix running with Vinco hardly working at a ratio of '2'.
If you wanne be sure, just do the mastering of an unmastered mix on both platforms, and do a real A/B comparison.
If it doesn't work for you then you know
