I like N most.

And Vanguard, , I asked the very same circley R question a couple of months back and this is how I learnt to do it from the carpals!
You have to hit Alt and then, while still holding it down, key in 0174 on the RIGHT number pad without a space in between, anywhere; Like this ®, Voila! I believe tsuwm, called it, automagical! And it truly is! Oh and remember to have Num Lock on; it doesn't work otherwise!