Golem seems good from the 3 coins your mention. They are still working and it would take them 2 to 3 years to deliver the final product. Another similar project is iEx.ec, they haven't started their ICO yet.:
https://bitcointalk.org/index.php?topic=1746241.0You could also look to invest into Dapps such as ICN, SNGLS, VSL ,EDG which are good long term projects with a vision and a road map backed by good team members. I strongly believe that investing in such projects could create a lot of wealth for the holders.
Recent days the above mentioned projects looks to be a successful one, but at the same in the past several projects that we expected to give big growth didn't progress. One amongst the best project of 2017 is Qtum which has got unique plans. I believe ethbits too holds a place in the list.