EOS is a smart contract platform with the most used Dapps, I recall. There is controversy over its consensus mechanism - with voting for 21 block producers I recall - but I suppose actual use is what ultimately matters. My gripe is the cost to set up an account, even if just a few dollars, and the seeming complexity of setting up a wallet. I'd like a much easier user experience.
Cost to set up an account is pretty negligible. It's either $1 or, in most cases, is free as a lot of projects run promos where they bear the cost of account set up and give it to you for free.