Should i go brunette? Pics included

Hi everyone im a natural dirty blonde. but over the past 2 years ive dyed my hair platinum. and before that ive done low lights..and prob every shade of blonde. i decided to dye my hair extensions brown so i could wear it two toned but i pulled my blonde back into a bun and clipped the extensions in so it looks like my hair is all brown so i could get an idea on how brunette would look. heres two photos.. should i stay blonde or go darker? Thanks


Blonde-

http://c3.ac-images.myspacecdn.com/images02/63/l_16f40710a0af4ce18b313a2a4da5e4c6.jpg


Brown-

http://c4.ac-images.myspacecdn.com/images02/48/l_88ce4234226043bb9f6373abc8d4fd0b.jpg