Have heard a lot of DeePOnion but all I can deduce is that one should not be too late to invest in it because they have a feature (DeepVault) which will soon gain mass adoption as they a working on integrating it to the official website.

Also DeepSend which will be released in 2018 will make the value multiplied, it is wise to invest when it is cheap.

This is very true, currently very under rated and it can expect to pick up once the features are introduced and are able to be adapted by a larger crowd. With such innovative technology and and being instilled in the TOR network I see this being a very promising project, get in now while you can!