This is my usual go to pho place close to home. The restaurant is clean, they get you seated quickly and the portions are fair. Make sure you take note that the pho prices on their menu are for the "large" bowl but by default they give you the regular size if you don't ask.
They have the best taste and value fresh spring rolls (they have pork and shrimp inside) I've had so far in Vegas. Seems so simple but yet other places can't seem to pull it off.
This place is pretty much a get in, eat, get out and get on with your life type of business. The service interaction is fairly minimal (which I actually like in some situations) so don't expect any small talk. They bring you some water, take your order, bring your food and you pay yourself at the counter when you're ready. If you need something else just flag them down and they'll help you. It helps if you know your table number which is labeled but they generally know which table is yours.
Your best bet is to do your homework on what dishes you may want to try, then go in and order by number.
If you're into really thick and strong coffee, give the Vietnamese ice coffee a try. I'll try to post a video of it brewing - it takes quite some time to funnel its way down into the glass so you can dump it in your ice but it's worth the wait.
My biggest beef with Pho Saigon 8 is that their Spring Mountain location is subpar and inconsistent in food taste/quality. I will however visit this location any day of the week.
PS- if you like pork chops marinated in fish sauce and grilled.. It's absolutely wonderful here. Another popular item is any of the bĂșn - rice noodle (no soup) dishes. Be sure to try it with the sweet chili sauce!