I've used both. They are very different products for me. The smoothie is more of a cream instead of the jelly-like consistency of the souffle. My hair is fine and while I like the smoothie, I have to use a really light hand or it is too rich for me. I do like it as a DT. I prefer the souffle for regular use. After my RO, I rake in either the souffle, LOOB or EcoStyler Krystal. Scrunch with either FSG or LALS. All depends on the weather and my mood. Still don't think I've found the "perfect" combination but I like the results.
3B, fine, normal to low porosity
Modified CG since June 2010
HGs: FSG, anything with glycerin, Tresemme Naturals conditioner, Curls Like Us cloths, satin pillowcases.