Hey Sara,
<br />
<br />Ditto what serendipidousday posted. They say that there is a difference between the standard eFlow (trio) and the Altera, and that you can't use the Altera for anything but Cayston. It seems like I have read that other people around here have decided to go ahead and use it for Tobi though. It supposedly had something to do with the metal head, but people say they look identical (I don't have a Trio so I can't compare). It's all so confusing!
<br />
<br />Ditto what serendipidousday posted. They say that there is a difference between the standard eFlow (trio) and the Altera, and that you can't use the Altera for anything but Cayston. It seems like I have read that other people around here have decided to go ahead and use it for Tobi though. It supposedly had something to do with the metal head, but people say they look identical (I don't have a Trio so I can't compare). It's all so confusing!