sdmann posted:Out of the various mini commanders, which one, if only 1 could be made, would be the one that has the most universal usage?
Scott, I can think of two that would probably be of fairly universal appeal. First off, the Mini Commander II for really small motorized units. As mentioned, this was one of the first ERR products, it filled a need for a truly small command board for motorized units. It comes in three "flavors", but the only difference is the firmware that gets loaded, the boards are all the same. I understand that offering three versions might present a packaging issue as you'd have more inventory to maintain. I believe ERR used to load these as needed with the correct firmware. If only one firmware option was to be offered, my personal favorite is the one with smoke & front light options. That gives me an extra remote controlled output, very handy for small motorized units. The one with both incandescent lights isn't really all that useful as the MC-II also has LED outputs for the lights. I've only used the coupler option a couple of times on these, I find the smoke/HL one a lot more useful for the reasons stated previously.
My other choice is the Mini Commander ACC. It appears from my examination of both the ACC and HC versions that the only difference is a more robust triac on the HC version, they're the same PCB and code from all appearances. That's a modification that folks could do "in the field" if they needed the HC version, so stocking the MC-ACC would appear to be the best path. The MC-ACC is the key to doing a lot of TMCC controlled accessories and rolling stock, so it rates high on my list.
So, my vote would be for these two.
Mini Commander II
Mini Commander ACC
That's my 
FWIW. 
Thanks for listening, and a BIG Thank You for picking up the ERR product line!
