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.
even though it is small, there is always an opportunity for early investors to make big profits from early stage projects, Moreover, when the new project has a launchpad on a large exchange like Binance, many investors will be busy buying the tokens offered by the project.
but for long-term investments, it's really not recommended to invest in new projects, it's better to focus on investing in projects that have been around for a long time and have a good reputation, you don't just think about momentary profits because long-term and safe profits are more important.
New coins exactly launchpad in Binance have bigger promising to earn profit as short term than investing in old coins, I have tried many time with participating with Binance coins launchpad and worth to buy early after listing in Binance. Depend investing in old coins we need long term investment for raising to higher price although old coins have good reputation and have top standings in CMC.
New project profitable awhile and their working like hype, during still hot after listing time exactly with Binance is moment for faster buy and sell without planning for long term holding. I am waiting with new project launching exactly with Binance launchpad to earn profit as short term than invest with old coins but need long term investment for getting profit.