Foundry looks great (if you're playing D&D 5e or you're a programmer!) - I'm hoping the user base grows to develop support for other rules systems.
I feel like I'm stuck with roll20 (seems old and clunky, but at least it has good user-built support for my preferred system - Star Wars/D6) but hey, all I really need is a place to interact with my maps and store/leverage digital character sheets, so I can't complain really.
On a more '[VTT] system agnostic' note, the whole 'forced digital transition' that COVID has precipitated has been an abject lesson in 'who and what really matters'.
For my group, playing remotely (even though we're all within 20-30mins drive) has meant about an hour more game time at each session and happier partners & family. I can get my son to bed and be 'at the table' 10mins later!
Now that we're back to kinda normal (zero cases in 12 days!), I've suggested to my group that we play mainly online and just meet say once a month or so for a meatspace hang-out and a shorter game. And if any of us ever need to isolate again, very little needs to change.
To me this is a great win-state!