Talk:Winter 2015 Event/@comment-25238518-20150211003544/@comment-25534439-20150211005235

Check the drop lists for rare drops highlighted in red. Of particular note are Akashi and Ooyodo in E1 and E2 who have serious utility. E4 also contains Unryuu and I-401. Unryuu was from a previous event and has a series of quests specific to her, and I-401 is usually Large Ship construction. Also look at some of the other entries for ships you might be missing.

There's a scattered lot of rare DDs which are nice to have, but IMO they're more collector fodder. I'd give E3 and E5 a pass unless you've got a lot of resources to spare, since they're combined fleets and will eat through your resources at twice the rate.