I think old project will be the best investment for you and you will never be disappointed with those projects because the best tokens always guarantee investors. Also if you want to hold for longer then definitely buy early top coins. If there are any profitable services offered by them, participate in them.
I agree with you I think old projects will give better profit than new projects. Identifying new projects is very difficult. There are many older projects that have successfully managed to raise funds for their development. But there are also many old projects that are still in the early stages of development. So you have to rely on your own analysis when choosing a new project.So before investing research and find out which projects are really real and credible.