Open EXR - Compression Yes or No ?

[reddeercity]

Hi all I'm Started to switch my raw workflow over to 2015 Autodesk Smoke for Mac from FCPX.
I learned on Big projects , it just not possible slows the system down to much etc.... so  as the subject says
I what to know if any one has any thoughts on the subject , Reasons is that Smoke dose not support Cdng's or DNG's.
So being I'm converting anyways I think the next best format ( and File Size is not a issue 6TB Raid5) is Open EXR v2.1
I did think of DPX as the 2012 Smoke backend use 12bit DPX but it just as easy to use open exr and I can use the new a.c.e.s
color science plus Finder can read it native, 
Just not sure how to get the metadata from mlv to open exr , hoping A.E. can do that . Did some test who no compression exr
@ 32bit float looked killer, but at 14 Mb file from 3.8 raw I want to being that down but not to kill quality need a balance.
I don't know enough about the compression side or exr.

Why Autodesk Smoke you my ask when I can use Adobe or Resolve ?
first I use to use  2012 Smoke, but be on that it's a all in one App.
Editing, VFX, Grading great support for fcpxml, edl's, xml's, etc... so you can have round trips.
It's now more affordable then ever,  but that's just my opinion