Fellas, I've used the Total Eclipse and Lightman Strobes before. Here are my experiences.

The Total Eclipse was about as bright as the Cateye 600, but the mount wasn't very secure. The light ended up going down in a blaze of glory when I rode over some railroad tracks. It popped off and cracked.

I bought a bunch of Lightman Strobes for my bikes based on reviews I had read on the web. I found that their light dispersed too much lighting up above the bike below the bike--places where I didn't need light. Also, the strobe is white, and if you need a colored light, e.g. a red one for the taillight, you must add Lightman's red colored lense, which has so much red pigment (in order to convert the white strobe into red) that it noticeably lowers the brightness down.

In terms of brightness, these lights don't come close to the freaklight.

Merton, I haven't seen the Reallite in action, so I can't say how this taillight compares.

Midwestmountainbiker, thanks for letting me know where taillights should be mounted. I'll have to write that down. This taillight, however, has a side mount. Thus, when put on the seatpost, it gets in the way of your pedaling legs. Moreover, in the website pic, you may notice that the light is not really angled up enough. This is because that's as far as it will go. It's necessary to file the mount some to get it to angle up more. It may sound like a pain, but the brightness is worth it.