If a coin have 10%, 100% or 1,5% annually POS interest is completely irrelevant. Your total % of the money supply will be the same either way. But you will problably be much better of with CGB and 1,5% since there will be fewer people minting for that low interest. With fewer minting your total % of the money supply will increase.
Coins that give stake 5% or more annually or even more, those coinprices will sink just as hard and you will end up with a loss. It's designed to look attractive to invest in but in the end you risk it all. The most extreme example of this is probably CENT that was sort of a joke coin (not for everyone), it staked like 1000% per month, total coins around in the end was 43 trillion I recall and the price went to the lowest LTCsat or even lower paired with DOGE.
Some people say the low stake % is not attractive, I say it's quite the opposite because there won't be as many coins minted and the coin becomes more rare so the price can actually rise while people are staking. So CGB has 1.5% annual growth from POS and 0.5% from POW. I think it's gonna be very rewarding to hold this coin longterm and many CGB'ers understand this. People currently selling at this pricelevel are fools giving away their investment for peanuts.