I've only got two, an e2e and a C3. By far my favorite is the e3e, it's compact size and brightness can't be beat. I was actually a little disapointed by the C3. I was expecting it to be brighter, even with the P91 lamp assembly. The P91 doesn't really seem that much brighter then the P90, but the hot spot is larger, the beams are very oval too. I guess I was just blown away by the e2e and was expecting too much out of the C3. Don't get me wrong, it's bright, but I was expecting it to be like the sun or some thing to that nature.