Generally speaking the newer versions of the HD parts are quite reliable unless the bike is being worked on by people that really shouldn't, or look at things without seeing anything.
On the touring bikes with the high output systems running the spots in addition to the headlite is all it takes. The little bikes have little concerns in this respect because they have low output systems to begin with.
The series type regulators like the Compu-Fire's work well, but the main advantage is that they may give you a couple horses on top if you use no or very little electric load. Here I go giving my dyno information away.

Just as easy to run no charging system.
You have to be careful with aftermarket stuff, there might be an american name on the box, but much of it is made in third or fourth world countries to a price point.
On a touring bike in the real world it is of no consecuence and probably a waste of money. If you keep having problems with the updated parts there is a problem in another area of the bike. If you want to go aftermarket due to a concern you may have with fried parts Accel is a good way to go. They are conventional replacements but are guaranteed for life and they are real good at replacing stuff.