This is mostly based on the ramen and not their other dishes. And ramen is only served like 4 hours a week. However, I think I found the best ramen in Arizona. I say Arizona because the other places in Arizona aren't that great.
Posh actually gets it right in flavor, texture and other things. I have had ramen in CA, WA, and even Japan. This place at least creates a ramen that let's you know that they know what they are doing.
Is it the best I have ever had? No. But it's pretty darn good. Especially here in the desert. I had the Miso ramen with the onsen egg (it was delicious). The chasui pork was so yummy as well. It melts in your mouth and sort of melts in your chopsticks if you don't hold it right. The flavor of the broth was great. It wasn't watery. You can tell that the flavor is blended into the liquid.
I wish the parking structure was easier to find (I parked at Macy's at Fashion Square) and I wish it wasn't so darn expensive. We are talking about a $12 base price! I guess when you have the good stuff and no one can match you in taste, you can raise the prices a little bit.
Overall, BEST ramen in Arizona as of right now this moment. 4/19/2015.