I was using the Matrix Biolage shampoo and conditioner and at first I really liked it as well. I was using the Color Care line, because I have sort of dry, long, coloured hair.
The smell is really fantastic, probably the nices smelling shampoo&cond I've ever used. The thing is, the shampoo - after a while - is quite drying. I think it contains Sodium Lauryl Sulphate, a foaming agent that is actually quite harsh on coloured hair, and sometimes left my scalp dry. The conditioner is also nice, but for me, I personally needed something a bit more nourishing on the ends, it didn't seem to be quite moisturizing enough so I had to use an additonal moisture conditioner mask once a week.
I think the Color Care line from Biolage is only good if you have shorter hair, if you have long dry hair that needs a lot of pampering, I recommend L'Oreal Professionel Vitamino Color shampoo&cond, I keep coming back to this and although it's more expensive, I just think it's the best overall line I've tried.