User blog comment:Shinhwalee/Major Event Preparation Guide for Admirals (OUTDATED)/@comment-203.106.150.70-20151215204128/@comment-25811188-20151221123107

Most of the time, you would be using CV. They have a huge plane capacity (at 93), beaten only by Kaga (sitting at 98). Besides that, their plane slots are balanced, meaning you can put good double chevron fighters on one or two slots, while also have enough bombers to dish out damage during opening strike phase. However, like other CV, they're vulnerable when left open and become disabled in shelling phase when they're at chuuha or below. Also, they have relatively mediocre armour compared to Taihou, Akagi or Kaga. I recommend using them for Carrier Task Force since they can help support air superiority and dish out massive opening strike damage.

You can also "upgrade" them to CVB. They have great armour and have more specialised slots (like Kaga, Akagi, Hiryuu, Souryuu... any other carriers as a matter of fact), which means you can either put fighters in the highest slot for AS or bombers for maximum damage. Like Taihou, they can launch planes at chuuha or above, keeping them in the fight. The problem is that in order to put all that armour, they lose the capacity to hold aircraft. They pretty much have barely one more aircraft capacity than even their unremodelled self. This means they sacrifised air superiority and doing opening air strikes (unless you put your bomber on the highest aircraft slot) for helping out in shelling phase and survivability. I recommend putting them in Surface Task Force since they can survive longer and help out the BBs and CAs in shelling phase, though there are times you need to use Kaga or Taihou to meet the AS requirement in STF.

Overall, it depends where you want them. If you need good carriers to help out in Carrier Task Force, stick with CV. If you need a good CV to survive and support the shelling phase in Surface Task Force, go for CVB.

To me, I think I should stick them as CV because Taihou can fill the role in STF, because she has great armour and have more plane slots.