I use Coinmarketcap as a site to obtain statistics and information about the cost, trading volume, capitalization, the availability of coins on exchanges and other.
Cryptocompare for me is a service for tracking my portfolio. For me, this is the most convenient web version of portfolio statistics.
I see bitscreener first time, it's hard to get used to the interface after the Coinmarketcap, but I see a very useful feature - filtering. Thanks for the info.