What are the Top 3 Omega abilities?

Rey x 2
Leia
GS

I threw one onto Old Daka's basic attack as soon as I hit the level requirement. +15% to the primary and secondary stun is fantaaaaaaastic.

Five's basic looks really good with omega and he has good speed for a tank, if you ever find yourself in a 1v1. Lando Calrissian's double down will deal double damage on its second use with omega, works extremely well with Admiral Akbar who's tactical genius can let him move twice in one turn. Besides those two any Rey ability

I did QGJ Basic first, Rey's basic first and I'm stocking my third. I think Daka may get it for her basic once she's ready to step up which is probably another week or so....either that or Rey's leverage.

I did QGJ basic first, Rey basic second, Phasma Victory March third, Rey special fourth, holding my current two until I see if I want to switch around my arena team or not.

My upgrades so far, in order:

Luke basic: 40% TM on crit

Ackbar basic: 55% chance to gain 45% TM

FOTP basic: +15% damage

HR Scout special: 55% chance to stun

Biggs special (assist): cooldown -1

Really happy with all of them. Just upgraded Biggs 10 minutes ago; itching to test it out.

QGJs humbling blow is the most under appreciated.

Gives your entire team 1 more attack with offense up.

If you add up the damage it dwarfs the +15% upgrades from characters like Rey.

Rey x2
GS
Leia
QGJ (for raids)
Also depends on your squad as well. RG for example omega on his buff seems useless on paper but in my AA lead team it means an extra assist a turn earlier so bumps up its usefulness right there. Same with AAs omega. I'm sure this applies to other characters as well

In no particular order:

Rey's x3 for pure damage
QGJ's basic
Daka's basic
GS's unique and swarm

Rey x 3