Each autumn as I obsess over this year's crop of LED's in preparation for night rides on busy streets, I do several things that you might want to consider:

1 - I put as much reflecto-tape as possible all over me and the bike. Example: squares of reflecto tape on the rims between the spokes. A single square on the hubs (so it "flashes" as the wheel rotates). Strips on the crankarms and seatstays and forks. I buy construction safety vests, de-stitch the reflective fabric and have a seamstress apply it to my winter vests and jackets, along the rear bottom hem and in a 'safety triangle' pattern. I add strips to the backs and fronts of my legwarmers. And my arms. And my helmet.

2 - I spend way too much money on lights and blinkies. Front and back of helmet. A couple on the bike. A backup / spare or 3. I even have a bright mini-light dangling from my helmet strap, shining downward illuminating my chest and the bike from the top. Makes it easier to see my gears and speedo, and, illuminates my chest, giving me a larger shape for motorists to see.

3 - Here's the key part: I get all geared up and have my wife follow me around in the family minivan, which has about the crappiest headlights of any vehicle on the roads these days (96 Chrysler). She gives me great feedback, such as: this little ankle strap doohickey is by far more visible than anything else on me (even though I have 3 rear blinkies, reflecto-tape etc: http://tinyurl.com/krr78zp

We've been doing this for several years now and her observations along with mine from seeing lots of cyclists at night has led me to point out a few things that I think a lot of people are missing, to the detriment of their safety:

1 - a single red rear blinky, no matter how bright, is not enough. In any kind of urban / suburban environment, with any amount of nearby traffic, it gets lost in the background noise. You need a LOT MORE SURFACE AREA to be visible from the rear
2 - a super bright front white light (pointed forward) is actually also good for rear visibility, since it lights up reflective road signs etc, and the ground patch is visible as well from behind
3- total lighted or reflective surface area is the key. Cover as much of your body as you can in reflecto-tape, head to to, to make a larger apparent size from a distance.

To the industry: a tiny little reflective accent on the sleeve of a jersey is useless. Don't waste our time. If you're going to sell night-safety bike gear, max out the reflectivity, head to toe.

Hoping this helps.