I have had one of the new CED M2
's since they came out. It is wonderful, and reads much better in low light conditions than the original mellenium. I also have the Infared Screen kit, but don't use it outside. I still get very consistant measurements with it using the factory sky screens.
NOTE: do not buy this chrono if you ever plan on testing arrow speeds from bows or crossbows. It will only accurately and consistant read arrows WITOUT fletchings (Bare Shaft). The fletchings cause errors as it thinks the chrono is seeing muzzle blast.