I have to say I do see a lot of potential with DeepOnion just considering that it's integrated with Tor, which has a lot of name recognition.  In addition to that the DeepVault and the votecentral mechanisms are certainly interesting if not entirely unique.  In today's climate I think name recognition counts for a lot, especially considering how many uneducated individuals are getting into the early stage crypto market.  Regarding comparing Onion to XRP i think it's just not a valid comparison because they are so completely different.  Also, XRP has already achieved an enormous amount of growth and market cap even considering recent dips, while DeepOnion is not only far smaller, but also has a much lower max coin count.  In summary, I personally bought Onion and I would recommend everyone else who can to do so as well.  I also bought Ripple, but a while back, and I don't know that I would advise anyone to buy XRP at $2 or more for myriad reasons.