Decleor is my favourite. The prologene gel is superb and I love their balms and oils - neroli and rose d'orient for me. Used their body moisturiser in pregnancy and didn't get a single stretch mark.
I have only ever had two really bad reactions to skincare products and one was with Gatineau - the Floracil, which lots of people love, brought me up in big red blotches and gave me really tight, dry skin. However, the moisturing eye patches are excellent.
My skin therapist, who doesn't push products and is not on commission, was unsurprised by my reaction to Gatineau, has seen it before, and said she felt the brand was overperfumed and too chemical compared to other brands.