I'd recommend using a quality salon product, I prefer Redken and Paul Mitchell.
I don't think anyone can recommend a particular conditioner to you because their hair is different than yours. I'd go to a salon, a good one not Fantastic Sams $5 chop shop, and ask someone there to feel your hair and recommend something for you.
I get my hair cut (the few remaining strands I have!) at a very pricey salon. I do this because the stylist knows how to cut my hair to make it look its best despite a thinning forehead. He knows my hair, and has recommended some excellent products that make my hair look healthier and feel great. But, what works for me might not won't work for you...