NUI Debuffs

[Xrystal]

nUI5+ has a few extra unitpanels such as 25 man and 40 man. I think 10 man is a part of regular nUI5 .
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nUI6 is still in alpha stage and still has a ways to go before it will fully replace nUI5. What he has done however is allow us mere mortals to play with it somewhat to see whether it works the way we want t to work. He aims to have it more customizable in game than nUI5 is which is why it is taking so long to get each stage up and running as they are more than likely interactive with other elements. What hasn't been customized into nUI6 has been freed up to allow blizz's version to be used instead. The aura set up in the top right being a prime example of this as he hasn't added aura customization to nUI6 yet.

As a new user to nUI though I would suggest playing with nUI5 as you have been doing and when Scott is back online it may be time to sign up and jump in and see what you like about the nUI6 changes and if you find you do 25 and 40 mans often you can use nUI5+.