ScrapMax 340, hands down.

Upgrade her to a Basic 04, once she learns how to use a knife. Actually...I would argue that once she upgrades, she'll revert to the 340 for processing game and for finer work. She'll use the Basic 04 for camp chores and making traps.

JYD #121
The chief cause of unhappiness and failure is trading what you want most in life for what you want at the moment.