#30 and #34 are my favorites. the knot on #34 doesn't quite seem right...but the shield by itself isn't quite right either.
I like #30 very much. it's growing on me as i think bout it more. The blues dont appear to mach. maybe it is my screen or the way the blue in the logo on the left washes/fades out.
#33 and #31 look too much like a road. i like the 3d fond in #31 and the color scheme.