I have both Sulfurs, similar to Fires, and Enchis, and here is my take:

It depends on many factors! If you want to produce Black eyed Lucies, then you obviously want a Fire, or Het Black Eyed Lucy of any line. If you do not want to make Black Eyed Lucies, but want to make amazing Pastels that stay much more yellow than normal Pastels, again, the Het black Eyed Lucy would do the trick.

Now, if you do not know what you want, what you want to make, then I say get an Enchi. Less of them out there.

Dave