A Geth Trooper with an Acolyte and specced for power damage can keep up with a Turian Ghost/Harrier X. On Platinum.
That's pretty effective.
*oops
Right now I am 6/6/5/5/4, but
this is better. I will switch to it next time I'm on.
Flamer 6: Damage (Reach is OK), Damage, Armor (Shields/Barriers are sort of OK, but the Acolyte is really the weapon for that)
Fortification 5: Durability, Power Damage
Hunter Mode 6: Weapon Accuracy (In case I want to use a gun, Power Recharge is fine), Power Damage, Damage
Networked AI 5: Power Damage, Power Damage
Fitness 4: Durability
There is another tankier build that emphasizes shield recharge, but I prefer damage.