LoneWolf
Senior Member
I just prefer the U.
R for return. As in easy to return to your retail store in 15 days if you find it doesn't work out.
When I buy something this expensive, it's one of the few times I actually buy local. If the firmware is extremely buggy or the unit is unstable, if I have the box and receipt, it's easy. Otherwise, I have to wrangle with bringing back.
There's no difference between the R and the U other than a letter, and how easy the return is.
P.S. To everyone else, there were four of these, maybe five at my local Best Buy today. They were $279.99 plus tax. So I'm guessing most of the BBs put them out on the shelf. First purchase I've made there since my RT-AC66R.