isboxer and multiple wows

Hello,

I use isboxer. Really great tool..
I have started to learn how to use it and everthing is working fine.

I just have one question.

Is it better to have multiple folder of wow (5) on 2 ssd?
1 with the ssd with the system and the other one with 4 wows.

Or to run 5 accounts on one game folder on one ssd?

All accounts from one folder is the preferred method.