Sorry, I have never tried the Devacurl line. This is what I do. I almost daily CO wash with VO5 or Suave conditioners. Every couple of weeks (or sooner if my hair feels blah or producty) I shampoo with Isoplus Conditioning shampoo and do an ACV rinse. I follow this up with a semi DT type of thing.

CO-Vo5 Kiwi Lime
Regular CO-Tresemme Naturals Silicone Free
Deep CO-Aussie 3 Minute Miracle

Shampoo-Jhirmack Silver Plus Ageless Shampoo (once a week)
Gel-LA Looks Sport (first day)
Aussie Miraculously Smooth (second day)
CO wash/occasional ACV rinse

Going silver-last hair color 4/10/15