In addition to my homebrew system (3W Luxeon low beam and 35W high beam, both MR16 in Optronics housings, plus front amber and rear red LED side marker "running lights") providing steady light, I use self-contained blinkies in front and back to handle the blinking aspect.
For the front blinky, I've tried the Lightman amber strobe (underwhelming) and the Cateye EL-410. I want something brighter. Hopefully much brighter. I don't ride on shoulderless rural roads so additional rear conspicuity would be a waste. In the suburban to moderately urban environment where I ride, it is front conspicuity that matters. I just bought a PB (1W Luxeon) Super Spot, thinking it has a blink mode, but it doesn't. Am going to return it.
In the original version of this post I went on to propose several variations of front blinkies and ask which one would be most conspicuous, but the discussion quickly sidetracked into whether a front blinky would get noticed next to my bright headlight. I've moved my original question to this thread. The thread below is for discussion of whether my front blinky will get noticed next to my ~1200 lumen front headlight. I saw that it will, substantially. Others disagree. Let the discussion begin: