Are you near Brookline? There's a good beauty supply store on Harvard Street just north of coolidge corner. Can remember the name but it's a few storefronts up from Coolidge Corner theater on the same side of the street. (almost directly across from Barnes and Noble)
They also have a branch in Newton on Beacon Street.
Conditioner results are so subjective I wouldn't know where to start on recommendations. My hair needs heavy moisture and i've been using Elucence MBC
which I love, but your hair may need something different. Before I went CG I was using Curlisto Botanical Hair rinse and doing the Curlisto weekly Deep Therapy hair masque. Those you can get at the Carriage House Salon in Cambridge (off Harvard Square) but they both have cyclomethicone. I loved them and miss them but am trying to give my hair the benefit of the curly girl routine.