Gear question: New Tier Veteran gear or Upgrade to Tier Champion gear?

So I already got a veteran tier chestpiece for my paladin, but from the great vault this week I got two rewards to choose from…a veteran tier piece helm OR a champion tier chestpiece

I dont have any other tier pieces, only the chestpiece. Two people answered me in game and told me different things.

  1. get the champion chestpiece piece since its higher ilvl and harder to get
  2. get the helmet so i can get the t2 set bonus quicker and be more powerful

I just need some clarity on what to choose D:

Go with the Champion chest, more item level potential and tier is easy with the creation catalyst returning.

Yeah but champion gear to upgrade needs wrym and aspect crest which =guess what mythic +…still got to do that content 6,7,8.

I take the champion chest piece. 437 vs 441 isn’t that big of a difference (Champion vs Hero). But 424 is a lot lower than 437. You will potentially use the chest a lot longer.

I think there should be awesome new legendary gear for Veteran players!

Sorry I am reading this too late to help this guy. My Google search probably should not have even taken me here. But for any future players with a similar question, I think there is a lot more info needed before you can answer a question like this:
What kind of stat change do you get if you take the helm? Is it an upgrade to your current one?
How will your stats/performance compare if you get the upgrade on the chest and keep your current helm compared to getting the set helm and the 2 piece bonus?
That is where the creation catalyst comes in; making your current helm or anything else a set piece.
But you have to start with the info on stat upgrade regarding each piece PLUS the details of the 2 piece bonus (having it VS not having it) - before making a choice.
I think that info alone should tell you which way to go.