Thanks guys. Bought the PT Aurora today. Sports Authority had them on sale for $20.99. That made my decision a lot easier. One point of comparison that nobody mentioned is the adjustability of the beam angle. The PT is on a hinge and infinitely adjustable, while the Tikka has a ratcheting swivel that "clicks" into position. There are only about 5 or 6 clicks that allow for what seems like about only 60° of adjustability. Since I have discovered I like to wear the light higher up on my head (so the light doesn't reflect into my glasses), I much prefer the PT's greater adjustability. Of course, the extra LED of the Tikka would be nice, but I guess you can't have everything.
While I am happy with the PT, I did notice that the beam is relatively white except for a noticeable blue spot right in the center. This seems to be significantly bluer than other les expensive LEDs I've owned in the past. Is this just the luck of the draw? Would it be worth my while to go back and check for one with a whiter output, or are they all pretty much identical in beam quality? The lights come with the batteries already installed, so it would be very easy to turn them on and check while still in the package. What do you think? Worth a 10 mile trip back to Sports Authority?
Thanks again,
Ken