Which crypto do you trust more, the one that is traded freely and nobody knows where the rate will go tomorrow (like Bitcoin) or the one that is under control of its developers (like Ripple, more or less)?
Where you would invest?
honestly I prefer investing in bitcoin because it is consistent with the fact that market price movements are based on the demand and supply of many people. however, several other types of coins can also provide benefits. but if you choose a centralized project, of course the risk is greater because not everyone will like it, especially if over time many investors leave the possibility that related projects cannot develop and cause coins to become worthless.
And to add also, centralized project like ripple has high chance that they will control the market for the benefit of their pockets. They might be playing the market to get more money while bitcoin on the other hand, is free to trade and no single entity is benefiting the price movement. So on my end, I would go for bitcoin no doubt.