I am a QVC fan, and over the years must have tried every "premium" range going, but my favourites are Decleor, Elemis, and at the moment Mary Cohr.
You could try a 'starter' kit usually about 6 weeks supply.
The good thing about QVC is that when you buy, you have 30 days to decide whether it's for you or not, and send it back if you don't like it. During the 30 days, you will have a good idea whether your skin likes that range or not.
Another range that they have recently introduced is A'KIN,.
This range has none of the 'nasties' in, so is very natural.
Nothing ventured .... nothing gained, as they say.
Good Luck!