Don't use the black and white
i disagree. love the black and white one. i'd say scrap the first and last ones for legibility
deffinitely get rid of the bottom right (last one) and the first one i reckon or the white and green
Get rid of the blue and yellow (first) and bottom right (although some people may buy the bottom right if it glows UV). The bottom one may look good on a black or white background
I agree with the top comment. Don't use the black and white. Purple and yellow is awesome.