After using both Roll20 and Fantasy Grounds from both sides of the table, I landed on Foundry VTT and never looked back.

It's not free, but the value for the price is almost unheard of these days. Andrew and his team have a knack for finding a good balance between power, flexibility, ease of use, and beauty. Also, they make themselves accessible to the community, and parts of it are even open-source.

I would only suggest another VTT if the DM and players were all dirt poor, or if the DM had especially weak computer skills.

My money is on Foundry VTT. It is robust and still pretty easy to use. The pay model is also superior to most others. Try using it with Molten Hosting if you want an always-on server instead of hosting it on your local machine.

Our party uses Roll20, but mostly due to sunk cost of content, it works fine.

We tried Foundry VTT but from.time to time there were connectivity issues. I'd say be sure your connection is very stable and you understand how to work your network/firewall/proxy settings before hard committing to Foundry. That said, it is a pretty nice system overall.

Now a couple of options you should be aware of are AboveVTT which is an extension that converts D&D Beyond into a full VTT people really like, good if you already rely on D&D Beyond.

Then there is the FOSS option MapTool, which is a full featured self-host VTT akin to Foundry, but totally free. If you like this kind of projected don't mind community built documentation, this is a legitimate contender.

I use Owlbear Rodeo

It has maps, tokens, fog of war and some small tools like a pointer and a measuring tool for distances — everything I need.

If required you can install extensions but so far I do not really use that.

Foundry VTT is the best on the market right now for my two cents. If your players find using it confusing then I'm really not sure what other VTT they wouldn't find confusing. The player side of things is pretty straight forward.

If you're playing Pathfinder then Foundry is hands down the best option in my opinion.

If you're running D&D 5e then Foundry with an addon named plutonium followed by the word that may or may not be import is the best option (you may have to dive into Discord to get it downloaded, but I promise it's the best VTT for D&D 5e.. yarrr).

After those, Roll20 is okay. It works, it's alright.