I use My Traffic X/3D over Ultimate Traffic 2 (which I used for years), for 4 reasons:
1. Includes military and cargo schedules. No more empty military air bases/air traffic, and places such as KMEM are packed with FedEx and UPS!
2. Can be used and is made for each version of FSX/Prepar3D with its own unique installer. UT2 is not permitted to be used in Prepar3D should you choose to move on.
3. Easy on system load.
4. Developer is constantly improving and adding new content and updating aircraft, not just flight schedules.
I have not tried Traffic 360, but what I have read is that it is a "lite" type of product. Both My Traffic and UT2 have way more schedules from what I understand thus far.