We like both design #18 and #20. Unfortunately we are concerned about the use of the brush as a company in Australia already uses the brush as part of it's logo.
Entry #20 is also easier to read and we're concerned that the 'r' in the other examples is a little difficult to discern.
Entry #17 is less preferred because the writing is not as dark
Entry #21 would be the least preferred out of these examples because it is too difficult to read and it has the brush.