i use both. ive just started using grapeseed oil and do really like it as well. but it seems to make my hair a LITTLE fizzier, argan oil helps more with my fizz, though GSO is better for defintion. they both make my hair really shinny and strong and help with growth i use both for my ends, to refresh and to help with "winter hair"

my hair: 3c, high porosity, high density and coarse hair (i think i finally figured that all out)
my hair loves conditioner only styling!
my hair goal length is bra strap length when curly.

I also blog about my hair journey, please feel free to read and comment/ask questions http://www.naturallycurly.com/blogs/...air-blogs/2494