YouTube streaming has proven to me it's a good option, the improvements will make the difference, but in my experience in the past they've had the worst commenting system/organization/delay of any group.
I think it's good to have options, and I think streaming is still coming into its own and won't be fully 'established' until a few years from now, it's seen a lot of growth in the last year but the tail result, and developments are to be seen.
Hitbox has risen in popularity more in the last couple months, but it's a slow process. However, I like that they've been actively adding features and optimizing it and fixing technical things as the months have gone by, and that there's more added every month.