Do I need DC Commander and Cruise Commander?

The dc commander is TMCC command control without cruise and the cruise commander is TMCC command control with cruise. You can install one or the other you don't need both.

Ron

Doug,

Even though the cruise commander is a little more expensive than the commander, it is truly so much better operationally. I've gone to it exclusively. Smooth and Slow.

With really good gearing such as that in the WBB Ten-Wheeler or many K-line designs

(sub-scale 4-6-2/2-8-2) I use the DC Commander. $60 or so. It also can be better

in a switcher with decent low gearing - the response is better.

With most 3-rail stuff I would recommend the Cruise Commander. I've done many of them. 

But, Iif you have a flat layout with no extremely tight curves Cruise Control is often not needed.

The DC Commander and Cruise Commander have the same footprint and connections, so if you don't prefer the plain DC unit you can easily swap the boards later. Did that myself last year. Then put the DC Commander in something else!

Personally, I haven't installed a DC Commander in years.  If you're going to all the trouble to do the upgrade, go for the Cruise Commander. 

Ditto what John said.  Last Cruise Commander I installed was in an old Railking RS3 that use to have Locosounds, runs great and sounds much better with the RS4 sound board too.  It's a tight fit in the RS3, but can be done.  I used to have this CC unit installed in a WBB E7, plenty of room in that engine.

Doug,

   As long as these are can motored, I would go with the cruise commander. A little more money, but a whole lot more of enjoyment.

Bill