ADA and XRP is the good one, but i personally don't like to invest on Top coins. I always find low market cap,undervalued & underrated coin so i can get a lot of money from that because it will be easy to rise more than 10 times when he had hes momentum.
I think it's also a good choice when it comes to investing, but don't be swayed by solicitations without doing some analysis even though the choice is in a low-priced altcoin.