The best one of these by far in my opinion is Ambrosus. Swiss supply chain platform with an incredible team and UN partnerships. Best of all they have multi tiered master nodes and the token economics are great. Check out this article for a quick breakdown of possible payouts:
https://medium.com/@snipecharts/ambrosus-expected-masternode-roi-dd98810683eIf you don't wanna read the whole thing then this little section is pretty good:
"At 100,000 bundles produced daily on AMB-NET, a Zeta Masternode (10K AMB) would earn $73.85 per day, or $26,955.25 per year.
If speculating earnings on the assumption of a successful launch and industry adoption of AMB-NET, 100,000 bundles per day may be conservative, instead it may be in the millions.
At 1,000,000 bundles produced daily on AMB-NET, a Zeta Masternode would earn $738.54 per day, or $269,567.10 per year."
And this:
"So one of the ingenious things about AMB’s tokenomics is that while all the bundles are fixed at a USD price of $10 (to make adoption easier and consistent), the bundle price is actually paid in AMB based upon the current USD-AMB exchange rate. Therefore, even if you don’t have a node and are simply holding AMB, you are still holding the fuel (the “Nectar”) for the entire AMB-NET. As the network grows, demand for the Nectar, which you hold, will also grow.
So another ingenious part of AMB’s network design is that every time a bundle is purchased, the network will automatically burn 5% of the AMB used to purchase the bundle. As mentioned above, as the network grows, demand for AMB will also grow as users will need it to purchase bundles. This growth in purchased bundles will subsequently increase the rate at which AMB is burned. So the more the network grows, the faster the burn rate is for AMB which will create scarcity. So you have this dichotomy where as the network grows not only will demand for AMB rapidly increase but at the same time, the supply of AMB will rapidly decrease due to more burning. As you’d learn in a basic econ class, an increased demand OR a decreased supply will lead to a price increase. But having both an increased demand AND a decreased supply happening simultanesouly can really cause a snowball into huge growth."