Talk:Winter 2015 Event/@comment-14874017-20150213190144/@comment-26091970-20150213191922

That depends on how many resources you have left. E-4 is pretty tough, while E-5 is a huge resource drain. It also depends on what rewards you want. E-4 only gives extra medals/improvement materials, while E-5 has the potential to yield the First-Class Medal on Hard. Both maps will give their map clear ship rewards regardless of difficulty.