Seriously, consider what trains you have, and expect to get in the future, in making your choices.
Using me as an example, I have mostly Lionel Postwar, and MTH modern, locomotives, so it made sense to make DCS the priority for my modern locomotives.
That said, my #1 locomotive happens to be a Lionel Legacy with whistle steam (NY Central 10 wheeler), which I bought 2 to 3 years ago, and run using the LionChief Universal Remote. Arnold