I'm in Cryptonote's world from spring of 2015 so I feel I can post my opinion.

So, my 2 cents...

DigitalNote is great coin but ruined now.
Original dev is gone.
3 chain forks exists now with same name.
Original XDN supported by Hitbtc, impostor's XDN with bitterx support and one more not sure about support.
Whats why we started Soldo last November.
So my advice - avoid.

Bytecoin is very unpredictable, they have some internal bugs in code and was delisted from Binance and Okex recently.
Advice - not more than 5-6%%

Bitcedi - frozen

AEON - must have, coin is great undervalued, it should have 12-18%

Boolberry - good coin

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As result, my vote is Soldo :-)