I prefer TTS, it just came to me easier than Vassal. I've been using TTS Armada for so long, I am confident in being able to teach folks how to use it. I think it's easier for people to get into and better resembles the tabletop experience with the camera perspectives.
It also has the added benefit of being able to do Betrayal, Catan, Pandemic, or Exploding Kittens etc. which my non-armada gaming friends have been making good use of during COVID.
PS. I can't wait to get back to IRL, because playing your fleet on a table is so immensely satisfying.
Edited by eliteone