In my opinion none of the coins I mentioned is rock solid, but I have researched lots of coins, and currently these are the ones which I find most valuable comp

In my opinion none of the coins I mentioned is rock solid, but I have researched lots of coins, and currently these are the ones which I find most valuable compared to market cap. 3 years ago I made a very good bet with Ripple (almost exclusively invested in Ripple for 3 years, and achieved more than 30x returns), now we will see.