I'm trying to figure out how to acquire mass quantities of the kinds of noodles used in the soup packages I get at the Thai store.
They don't say Ramen on them.
Some have said Udon.
So those were wheat noodles, if I understand correctly. (Edit: duh, maybe I should read the package for more details next time -- at least some of the packages had ingredients in English -- though not all)
Some have been more pasta-y looking. There was a ramen-package looking package of pad thai (I think it was) which had pasta-y noodles. And I liked that texture. I think those were rice noodles. But I haven't had much luck achieving acceptable results with the plain rice noodles I have bought.