Which tech deserves to be ranked up most?

baboli

I only have Ghost as a 6-star tech champ already ranked up, but I have almost all 5-star versions of the solid tech champs.

Based on this tech roster, what do you guys suggest for my next R3 would be? And please state why I am mostly utility fun instead of burst damage. All of the listed champs are unduped.

EDIT: sorry guys this should have been normally a pool post. I accidentally create a normal post. Anyways we can continue on this.

The options are Sentinel, Hulkbuster, and Ultron.

Malreck04

Ultron. Don’t have him but people seem to love him