I assume you just mean the devacurl products? I got the little travel/sample pack because I was interested in trying the products, but mostly because I needed a microfiber towel. :-) Overall, I didn't love the products because they weren't moisturizing enough or strong enough hold for me. They smell wonderful, though.
The No Poo was fine. Since it has no lather, I really didn't notice any difference compared to any other conditioner I've used for co-washing. I have a really hard time spending that much money on a cleanser when I can spend $1.50 on a big bottle of Suave conditioner to co-wash, but that's just me (I don't have tons of money to get several expensive hair products so I need to save where I can).
The One conditioner was fine, but I didn't think it was conditioning enough for my hair, even if I didn't rinse much out. My hair has always soaked up conditioner and I know everyone's hair is different but mine is about 3A and I would think your 3C/4A would probably need more moisture than mine. I have been using it as a leave-in conditioner and also using it most nights (I mix some with a little water and apply to my hair just slightly moist to try and add some more moisture) but after I use up the little bottle I won't buy it again. Same issue as the shampoo, I just can't justify the expense for something I can get much cheaper in another brand.
Lastly, the Angel was also just fine. It didn't have a lot of hold, even if I used a lot. They do have another gel, Arc Angel, but not in any small sizes (that I've seen) so I haven't tried it. For right now, I'm sticking to LA Looks (although I have a trial pack of Jessicurl products coming and I can't wait to try them!)
I don't know if any of that helps. Like I said, smells great, but, for my hair at least, there's not enough conditioning and hold power. Good luck!
Stopped brushing and straightening in 2008.
Sulfate, silicone, and terrycloth free since June 2011.
Co-wash: Suave Naturals
Conditioner: Nature's Gate Jojoba
Gel: LA Looks Mega Hold
Still trying to figure out what my hair likes and how to beat the frizz.