Currently, if you want to buy any altcoin, it is very difficult. You can't choose an option quite easily. Also, the crypto market is currently volatile. In such circumstances if one wants to buy altcoin. So what should be the main focus?
My main focus will be that coins which has fast and upgraded system at present time. Here i see DOT and ADA is very popular with its blockchain system. ADA now in number 3 position with 37B$ market cap that is amazing and DOT also moving same speed. So there is no objection to choose ADA and DOT coin from market.