top crypto coins are good for both trading and investing ,but investing in top crypto coins you will need capital more, if you can search good altcoins projects which are developing and working on there product that would be good investment
as for trading many coins will be ok as you don't hold positions for longer time
Isnt it better to invest all your money in few best coins that to do so with so many coins with low prospect of growth? Bitcoin and ETH gives you great outputs in the market these days. Many other Altcoins are also good for speculation. DO not fear the high cost of investment. You can have ETH at around $174 right now and trust me it is going to rise in days to come.