Full disclosure: Tokyo Express was my first job (in 1994). So I'm probably biased. This is a Phoenix locals favorite. The same people have been going here forever.
That being said --- I have tried boatloads of Japanese fast food in my life... and nothing comes close to 'the Tokyo.' (anyone who EVER compares it to Shogun, etc. Thems are fighting words.. and I'm a pacifist)
It's fast. It's cheap. I love that they place your announce your orders with "ah-nay-guy-she-mas" (which if I remember correctly, means 'please')
The sauce and rice are always perfect. The salad dressing is out-of-this-world. 20 years I've been going there and I have no idea what's in it. Probably an addictive chemical. I don't care. It is terrific.
I haven't worked in many restaurants but nobody cleaned a kitchen like the management at Tokyo Express. You never have to worry about the back. As a teenager I once ordered a sukiyaki bowl 27 shifts in a row... and I still wasn't sick of it by the end.
I only wish there were still more in town but if it's lunchtime and I pass by the one at 10th & Camelback or the one in old town Scottsdale.. Tokyo Express sucks me in like a tractor beam.
If I move away... upon returning, my first meal will be a spicy teriyaki chicken, a couple of side salads (with extra dressing) and a medium tropical iced tea. That's not a meal. That's utopia.