First off the fact that there is something for almost every income level welcomes new comers. I'm not into N scale, but in large scale my first G train was a Bachmann starter set for around the Christmas tree. I have since expanded, and now I purchase the Spectrum series in large scale. I know several folks that have garden RR's that would never consider buying Bachmann, now when you visit them, there are Shays and other spectrum engines popping up everywhere.
As for couplers, my Dad has always been in HO, I do have some engines and yes they are Bachmann Spectrum series, all great runners! But most of the cars are the horn hook type. I simply pick a car to be a transition car and switch one side of the coupler. Example on my log train, the engine has knuckle couplers, the first log car also has a knuckle on one end where it couples to the engine, the other end is still horn hook.
As for couplers, my Dad has always been in HO, I do have some engines and yes they are Bachmann Spectrum series, all great runners! But most of the cars are the horn hook type. I simply pick a car to be a transition car and switch one side of the coupler. Example on my log train, the engine has knuckle couplers, the first log car also has a knuckle on one end where it couples to the engine, the other end is still horn hook.