The Freshmarket/SAIT ramen is really fucking good - I wouldn't say it's expensive for the quality of food you get but it ain't cheap (~$14 iirc). You want good cheap ramen, hit up Tokyo Street Market (not in a +15). That said, it's stupid busy
all the time.
Koya is cheap and pretty good. Although I don't know what the hype about it is, I don't find it worth the line-up if there is one. But I'm a white honky so what do I know.
Wise and Wright is a god damn rip-off. Downstairs at The Unicorn is quite reasonably priced and the food is solid pub fare. Palamino is always worth the walk despite not being in a +15 either.
Want more non-+15 options?!