Help Peter Viviani choose a design

Peter Viviani is running a logo contest. So far, designers have submitted 242 entries and Peter Viviani would love your feedback on the 5 entries below.

#258 by
Aprile*
#242 by
UniLogics
#229 by
artnivor4
#173 by
kaptenko
#252 by
ntot

Want to know who wins?