Really like #27 for colour. Also like #29 for the light reflection look in the circle
Just a couple of comments
1) Can we make the Q in the logo not touch the outer edge, ie give it green space all around (to the same distance at the top right corner)
2) The font Could be a little 'tighter' with slightly sharper corner on the F (not sure what font type, this is OK, but think would prefer something similar, but not quite this one)
thanks :-)
3) in #27 the line in the Q looks black, with rest of the Q is dark grey. Should all be the same colour.