A small investor can afford to buy TRX but XRP is not a cheap coin that can be bought in ten thousand lots. Even there are many other good potential coins one can search from the top 100 coins from the coinmarketcap list. Both Trx and Xrp is a good coin apart from this one can check XLM, ADA, NEO, Ethereum, BNB, Polkadot, Pancakeswap, and 1Inch these are doing goods and expectations are high from these coins it's not an investment advice one should do its own research before investing.