I had mixed feelings about the Deva products. They're nice but I can get similar or better results from drugstore/less expensive products.
No Poo is great and I love using it when my hair is feeling dirty (after a long run or exercising). I don't mind the smell but it does linger. I think you can get the same results from a drugstore conditioner though.
The Deva conditioner I found to be very weather specific. I started using it in the summer and didn't have any strong feelings about it but I picked it up again after Christmas when my hair was suffering from "winter hair" syndrome and it really boosted my curls. Again, it's not an HG product for me and I can get the same curls with cheaper conditioner.
I agree with you about the styling products- I find they don't have enough hold while leaving me with the "too much product" feeling.