#160 3 silver bars covering the blue sphere seems a bit too much, maybe try 2? I like the colours in this one but maybe the font needs to be more adventurous.
#161 #162 Refreshing colours! Surprised no one thought of cogs before, although perhaps there are too many cogs in #161. I like the dashes in #162 but I think it would have more attitude if the dashes got bigger toward the outside? Same comment re font.
#163 The graphic is interesting but too abstract, looks like a fruit or a quotation mark or even something on fire?
#165 This S is too similar to the old carsales.com.au logo and a few others I've seen around...