Thanks to all you. I"ll do my research and next I will ask again, if you please.

I have a lot of DC trains, cars, tracks, figures... If I want to buy and enjoy only one DCC locomotive with speed, lighting, direction and sound control. What do I have to buy: the Dynamis handset, the locomotive with soundtraxx, and some of the new accesories like E-Z command DCC turnouts?

I understand that I have  to make an effort and explore the new era in this field. Anyway I need  some help from the experts. So what are the main differences between an E-Z command controler and the DCC Dynamis hand set? Next, if I buy a locomotive "with a factory-installed 8-pin plug for DCC decoder installation of your choice", may I buy a decoder to digitally control speed, lighting, direction and sound? How does this work? And, if I buy a locomotive with the control speed, lightiing and direction decoder included, how do I add the sound? Thanks in advance.
ALO

So, would I need  to buy a new power pack and speed controler, for new locomotives? And I suppose that the older ones cannot run with this speed controler, am I ríght?

Hi there. I bought many train sets in the 80's and 90's, thinking in the days of my retirement. Everything was packaged in a box, and now I find that all my stuff works with another technollogy, of curse.
What are the new things, in resume, that I have to consider to enjoy actually this great hobby?
Could anyone give me some advise?

Thank you for the link. I'll do the research You suggest.

jbrock27, the diesel is a UNION  PACIFIC U36B locomotive.
Another alternative would be using the motor of another  old locomotive that has the same motor?Sorry if I insist in the issue, but the body of the locomotive is beatiful, at lease for me.

Hi, I am new in this forum.
I know there is no more pancake motors in the market. Can I replace this motor, for an old Bachmann locomotive, with a newer one (new technology)? Everything else is new. Thanks.