Scrap Upgrades (Scrap Collector)

This is about the Scrap Upgrades in Scrap Collector

Faster Barrels
Same as for the upgrade Faster Barrels in Scrap Clicker 2: Very important at the beginning. It's usually the second one which reaches the max. level.

Max Barrels
This one increases the maximum number of barrels: Important for everything (Getting Scrap, Magnets...).

Inner Spawn
Makes barrels appear closer to the middle. Not really important at the beginning and should be the last upgraded at the same scrap cost.

Auto Collector
Automatic collects barrel. Very important, especially for magnet farming.

Better Barrels
Increases the chance of better barrels appearing - Important to get more scrap.

More Scrap
Finally something good! This is the best scrap upgrade in this game, because it increases the awarded scrap by 20% per level! The focus should be on this one.

Longer Boost
This upgrade simply makes the x10 Boost lasting longer. Pretty OK.