I do 99% of my running in the dark.  I rarely see any cars but have been wearing reflective ankle bands.  I've been persuaded to get something a bit more reflective than they were after my dad graciously reported thought I needed something a little brighter.

I searched the warehouse and decided on a Nathan vest.  It has two red LED strips in the front of it that flash.  I tried them in a dark room tonight and I do believe the flashing would tempt me to actually dive in front of a car to stop them.  The vest is rather bright without the strobing lights.  Here are a couple pictures to show it.  I plan to try it out Saturday morning in the real world.

The vest I bought:

Front (without strobes):

Back (no strobes on back):

The vests definitely reflect well.  The only issue I have with them is that I like to be able to control my visibility.  I do most of my running in the dark as well and felt safe most of the time.  But it only takes one stupid car.  So I got a simple red LED clip-on for Christmas.  I can switch from solid to blinking to be more visible, or turn it off to be less conspicuous.  Easier to avoid the occasional - "Hey, look at that dude in the yellow vest taking a leak in the bushes!"

I got the Amphipod singlet vest before Christmas. i just got the passively reflective one, they also have a light up one like the Nathan. I wear a headlamp and a blinky red ass light, so I figure I'm good for electric light ups. The vests are nice because you can wear them with whatever outfit you want and aren't tied to a specific jacket or shirt. I have worn mine with all kinds of apparel with no issues. I think it will work with tank tops and sports bras even.

Oddly enough, I never see any other runners seem to care about their visibility like I do. Heck, the only person I ever run across that has a headlamp is my Tuesday night running buddy, which she remarks that seeing other runners out with lights is a rare thing for her as well. The trails we run on are flat and paved but not well lit once you get behind neighborhoods and by the lakes.

There is a company called Illuminite in MA that sells all kinds of different reflective items. I discovered them when they had a moving sale so bought some shirts, jackets, and hats etc. plus a dog leash for $2 each. When I run at night with a group people comment on how well they show up.

I've got a couple of orange reflective bands that I wear around my ankles when I run after dark, along with a flashing LED light that I wear on my hip, bright colors, and a bright flashlight that I will use primarily as a tool to alert drivers that I am out there running. All that along with whatever reflective stuff my cloths have.

I do need more though - One can never be too visible at night. Heck, I've had drivers play chicken with me in broad daylight. I don't think that things would improve after dark.

I ran with the vest this morning.  It took a few minutes to get use to having it on but overall it seems comfortable.  I did meet 3 cars during my run, I hope they liked it.

I have a reflective belt that I use for the Army.  It is quite visible and I never have problems seeing others wearing them.  I have had a few "creepy guy" occasions when I didn't want to be seen and simply pulled my shirt over it.