This is my go-to pho restaurant here in Henderson (for the record, I have not yet tried Pho Mai Lan down the street). As a Vietnamese girl who grew up in Orange County (the largest congregation of Vietnamese people outside of Vietnam), I can only give it 3 stars.
The food is "good enough" to satisfy my cravings, but nowhere near the best or even mediocre Vietnamese food in SoCal. They have a really great variety so I can get pretty much anything I'm craving, and their Vietnamese iced coffee is really good (and properly served with a drip thing over a mug with condensed milk and a cup of ice).
Yeah, the staff isn't super friendly, but that's how Vietnamese restaurants are, in my experience. They hussle you in and out and don't really come back to check on you - pretty standard. However, the one thing that's incredibly annoying is that they insist you order by the menu item # and when the food comes out, they say the menu item #. I have terrible memory, so I can never remember what number I ordered (I remember the name in Vietnamese because it's usually a staple that I order frequently).
They are really good about splitting the bill by item / person if you come here in groups as my friends and I frequently do. You just pay at the front and tell them what number dish you had. No credit cards under $10.