There is no such thing as a best compressor, or EQ. It all depends on what you want. Do you want color, transparency, gentle touching on the mix...Waves SSL 2 bus compressor is great, as the V Series compressor as a little color. For more color their API is great. For transparency the Waves mastering plug ins are great. UAD has great mastering tools too if you want the UAD card in your computer.
Try this, although it is not for the simple minded. EDIT: I see you already have this?
You can easily combine this with e.g. a Waves SSL first doing 1-2 dB GR of glue comp, then into the Solera+ for the rest of the job including levelling and tightening. Check out my SSL presets for the Logic 8 comp (use the search function) BTW.
As weird as it may sound also try using Logic's own compressor doing NY style parallel compression using the extended parameters function wet/dry - not as mastering comp. This is useful for beefing up the mix without sacrificing transients, which I think is important in many music styles including Minimal.
I prefer doing a squash comp for the parallel signal, i.e. extremely fast and lots of GR. Getting a bit OT here though ;-)
Could be one solution yes. Then you have a fairly colored glue comp + 1 flexible HQ comp for contouring and levelling.
Follow by a Flux Pure Limiter (let some attack thru) or Sonnox Oxford Limiter (my fav) with a trade off setting of more apparent transients for more distortion (no autogain, auto comp in, safe mode on, attack>50ms).
I thought of buying hardware compressor but I already spent a lot of money in my studio. Then, I'm searching for the best compressor plugin. I'm on Logic 8.
I saw Sonnox Oxford Dynamics ...
Can you give me your advises ?
There is a great quote:
"Learn to distinguish the difference between errors of knowledge and breaches of morality."
In this case the error is in not the path to your knowledge, but the road down to which conclusions you have gathered may make sense on a surface level to you and without regard in researching that of the greater opinion.
And sadly, neither would be the greater opinion as the compressor plugin is not really a compressor. It is more like a transient modulator without an expression of the transients on the opposite side, therefore really negating the secondary purpose of the plugin which can often be more useful than the first in the digital realm.
Thus, you may want to look at a hardware compressor, but only of great quality, now that considerable time has passed and the opportunity to learn from any mistakes on your or other's road can become as evident as before they even existed.