Color Shampoo and Conditioner

Ok ya'll, I need a suggestion. Over the last 2 months, I've been using John Freda Brilliant Brunette. Last week I got my hair re-dyed the same chestnut hue, and everyone has said "oh Sarah, you went darker". This has lead me to believe that Brilliant Brunette, no matter how much I loved it, does nothing to help color fading. I didn't realise how much it had faded until everyone (and I do mean everyone) said something about it. So, in your opinion, what is the best color protecting shampoo and conditioner. THANKS!!!

redken, wella, shckwarpf, paul mitchell,.. so many types if shampoo, so little money to buy them.
if you can the salon brands stuff you will do ok.