You will eventually have the best equipment with time.
Melding pieces available from killing Zombies.
Upgrades Extensions are from Ore mines(dailies)/ exchange zombie's store/ Doom arena Rewards.
Most important thing to upgrade now to purples from start level 1 to level 3.
- Level 3 equipment gives you double the middle stats. Radar long range becomes 2 Long range stats, like in the picture up showing.
So start upgrading Radar > Computer > weapon Apparatus > Reactor.