I think there's only 1 best alt now - it's ether, of course, but every day new projects are being created that could take the place of ETH in the future.
Yes ETH still the most valuable altcoins in crypto. Though we are somewhat disappointed about its price but couldn't deny that ETH still procuring potentiality among others. May other altcoins did best and have a sustainable growth bit it won't just all it matter with that, but we look at how it plays a big role in the community and ETH seems to be.