New Altcoins are appearing all the time. Can any of our members with expertise say which of the most recently released Altcoins is showing promise? It's so confusing to try and figure it all out.

Common wisdom for new investors is always of the 'don't put all your eggs in one basket' type. Don't invest all your investment capital in one company. Diversify so that at least if  one investment fails, the other will carry you through. Is there a similar type of advice for crypto currency investors? Is it better to concentrate on investment in just one crypto currency? Or should we diversify? I would love to know what others have to say about this.