2 hours ago, JonathanC said:

You pay a monthly subscription, but then you get actual real world real time data.  So the flights you see are happening in the real world. It is great if you need that level of accuracy. I like it but I am not that serious about flying exactly like the real world so don’t pay. BATC/FsHUD/FSLTL plus in game default works for me. 
 

PSXT uses the AIG models. You don’t run the traffic controller. 

Sorry, I was referring to fshud

I use FSHud with AIG and FSLTL models. The most realistic AI traffic i have experienced, and ATC is solid too.