Which one should I use, I can’t decide!! 
I’m most likely going to be using Mark V helmet, ODST Torso, Ricochet Left Shoulder, ODST Right Shoulder, ODST Legs, Ricochet Arms, Verdant Visor and Black primary and Green secondary.
And to answer your question, I say mix them up and use both (it’ll look quite cheesy if you just try doing Master Chief or Rookie)
PREFECT
But I Voted Mrk V as per choices. I LOVE ALL THREE
I want the Mk V legs so I can have the space bikini. 
Go for both. 1 week put on the ODST then the next the Mark V, then once that’s over try to think which one best suit you. Im looking forward to both, but i don’t want to change my “lovely” Recon.
Most likely going for odst then I mite try mark V.
Why are we choosing between two perfectly good armors? I would gladly choose both, with prefect squeezed in the middle.
You know, I always give all the different armor sets a try and then see which one I like the most on my Spartan. It works for me.
I’ll probably be wearing ODST for a very long time though 
Gotta love the Helljumpers.
I’ve been using ODST since Halo 3. That’s the one I’m going with.
Both, I want the Mark V’s space underware and arms, but I also want the ODST helmet.
ODST! And don’t let anyone ever tell you otherwise!
Use the one that you like most.
Prefect FTW! No for real though, Mark V.
ODST! Feet first!
> I’ve been using ODST since Halo 3. That’s the one I’m going with.
> Both, I want the Mark V’s space underware and arms, but I also want the ODST helmet.
> ODST! And don’t let anyone ever tell you otherwise!
> ODST! Feet first!
> Use the one that you like most.
ODST, it is!
Pretty interesting to see that the votes are pretty much tied right now.
I’m goin’ Mark V. Interceptions will look so good.
Mark V.
I would go for ODST but I dont like it as much as the Reach or ODST iterations of the armor.
ODST helmet is ftw !
Heck, i’m gonna use both
> Pretty interesting to see that the votes are pretty much tied right now.
>
> I’m goin’ Mark V. Interceptions will look so good.
What happened to being tied?
Personally, I’ve always been a Mark V kind of guy.