Board Thread:General Discussion/@comment-26038543-20150201043542/@comment-25730832-20150201051659

Depends, let's say you're lvling Hibiki/Fubuki/Hatsushimo. The level range from 20-70 is steep and having them modernized will make your life a bit easier when trying to level them (although if you do 3-2-A all day it doesn't really matter). On the other hand, ship with lower Kai ni to Kai range can be consider as should you modernize it or not.

Honestly, later on when you start getting more CA, BB, CVL the modernizing trouble would be less considering how much stat they each give. Just ignore AA stat until the final moment and after you max all other stats.

On the other hand, those stats will increase as you level up anyways so...sometimes you don't even need to modernize them and they'll reach their max themselves. Modernize just make the procedure faster.