Board Thread:Fleet's Prepared-ness/@comment-139.228.45.21-20150802153450/@comment-109.148.89.105-20150802161747

Daily upgrade is good for upgrading 35.6cm and Type 91 as both of these require only 1 improvement material. Though with the event in just over a week you won't have enough time to make enough sets of each so I would just upgrade as much as you can right now. 20.3cm no.2 are also a good upgrade and once you have enough upgraded equipment for about 4-6 ships then you can spend the rest of your improvement material however you want or not at all. Improving equipment is highly recommended if you are attempting medium or hard.

I hear people all the time recommending to upgrade the type 94 AAFD to 10cm+AAFD as it is the most useful equipment for DDs and it only takes about 30 something screws so it definitely is worth spending your screws to upgrade that.