Okay, back with an update.
Based on how things are going SO FAR (I still need to see how the treatment holds up in a humid enviroment), the Kenra treatment is probably my favorite thus far. I adore the way it makes my hair feel-- I noticed a difference immediately upon washing it out after flat ironing, etc. My hair just LAID.
Now, I am relaxed, but my hair is color treated, and I have certain areas where the ends are damaged and puffy. My hair normally air dries relatively big and voluminously anyway. My hair was airdrying with hang time-- it stayed laid, and the areas that normally became puffy and dry quick due to damage laid nicely as well; the treatment must've done wonders for my hairs cuticles. Also, I love how it held up considering I did a color treatment afterwards (demi-permanent). Other treatments I've used (specifically, Design Essentials Transitioning Foam) seemed to wash out quicker or not be as effective once I applied color, be it right after or a week or two after. Me coloring my hair had no adverse effects on the treatment.
Only negative I can say about the treatment is how long it took to apply. It's the longest of the four I've tried, by a long shot. Having to dry my hair completely after clarifying it AND use at least 6 passes per section when flat ironing was a pain. I was concerned about the flat ironing passes and temp it recommended, but I told myself I'd scale back if I saw any negative side effect when doing the first few sections. I had no problems, no breakage, no smoke, nothing. Reminder though, that I am relaxed, so I can't say that if a natural head used that many passes, that there wouldn't be a risk of heat damage.
I'm excited to see how this holds up, but first impression wise, I am pleasantly surprised and extremely pleased.