I am new to the train game. I have a Bachmann set with EZ-Mate couplers and I have some Model Power freight cars. The couplers are different. Do I need to change the ones on my bachmann or the Model Power cars? I like the ones on the Bachmann better. Do I just change the couplers or do I need to change the entire truck assembly? I also need to know the best brand couplers and/or truck assemblies to use. I do not know anything about model trains, but i am looking forward to learning.

I have just purchased my first train set. I also bought some freight cars from Model Power. I have just learned that there is a difference!
Can I change the couplers on the Model Power cars to work with the EZ-mate ones on my Bachmann set?