Pho joint near Lotte in Rockville
I've been a couple times. It's perfectly fine. I prefer Pho 75, but this place works when I don't want to make the longer trip up 355.
A couple things in favor of this place is that it is open a little later than 75 (9pm vs 8pm) and it takes credit cards. Tables are not communal, and there's a flat screen TV with some Vietnamese videos playing.