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DC is usually more fault tolerant than DCC. Running pure DC, If I run my DC locomotive into a switch set wrong, it just jams. The other trains, even ones in that power district keep moving. Even the wheels on the jammed locomotive keep churning. With my DCC, all the trains in that power district, and sometimes ALL the power districts on that transformer stop. And sometimes they have to be individually restarted (sometimes not), which means re-throttling and turning the lights back on etc. With DC, you just throw the switch, rerail and go. There ARE locomotives that won't run on DCC, LOTS of them. There are even some that won't run on DC on top of DCC (which I have and think is great). Converting DC locomotives to DCC is not trivial (especially in N scale). Somtimes its very hard. There are a few locomotives that get damaged if run on DCC. There are some negative issues with DCC in a large club layout.So there ARE disadvantages to DCC.Having said all that, and having BOTH DC and DCC, I will say I run DCC almost all the time. You just can't beat being able to have a throttle on ALL locomotives running DCC. It's just GREAT!!
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