well, if you can, try to avoid Ozone.
If you're actually using it for JUST EQ as you say, and not using their presets or something, you're just using A LOT of extra cpu.
but if you're using their presets, it might be what is holding you back.
As for impulses, i say give catherasis' impulses(idk how to spell it) a try. Just search "impulses" on these forums, im sure you'll find his set.
Personally, my most used impulse is S-pres_high. Because as gareth said, if you cant get a good tone out of that, then there's something wrong. haha
For drums, try different settings. They dont seem to be really working with the type of music, and is making the mix sound worse, as well.
I'd try to find a snare with more body, and less snap than the one you've chosen. And your drums sound like they're on single samples or something.
For guitars, you dont really need that much going on.
I have;
TS -> Gate (depends on the music, lately i dont use it as much) -> Amp -> Kefir -> EQ.
From my experience, i dont really like compressing distorted guitars. And i usually keep EQ boosts under 2db, and i barely use cuts.
For bass, i put the track in the project 2 times. i have 1 bass track for the low end being slammed down to a specific level, then i mix around it.
while the high end i run through a highpass untill it's just the clank then i run it through some sort of amp (usually high gain to bring out the clank, lows = 0. mids = 7. highs = 10.). usually thats turned down around 15-30db so it's not ALL you hear the whole mix.
For masters i use a Saturator (barely, but its there), Compressor on 2:1 with a .1 attack. usually the compressor only compresses around 1-3db. and then i use makeup gain to bring the mix CLOSE to 0, but not above it, then i use a limiter to keep the mix around those levels. (usually a threshold of -5ish, and a output level of -.3)
That's just my approach on things, and I've never typed one of these out, so this might be completely useless to you, or it might help you in the right direction of mixing.
Try this and see how it sounds, ill give it a listen and be of assistance if you want