I own both the Roll20 and Foundry versions for this and Foundry is so far ahead in terms of immersion and detail that it isn't even a competition.
One of my favorite moments running this for my group was when our Barbarian blurted out "I swear this feels so real, I can almost taste the smoke in the air".
Great job on making such a beautiful product that makes it so easy to bring our stories to life.
If you've ever been hesitant about Foundry or Pathfinder, this is the product to help you break in. Buying this and the additional $50 investment for Foundry will give you so much in return, that you'll be kicking yourself for not doing it earlier.