There isn't any good ones, just so so ones, their lighting abilities are sub par with other lights. I hate to say this but you shouldn't rely on reflectors, or what's called passive lighting, you need to concentrate more on active lighting. I'm not trying to be a smart **** with my answer but take special notice of something the next time you're out driving your car at night and go down a street of parked cars and see how many of those cars tail lights beam back at you with their reflectors. Please note I am not saying never to use reflective stuff, what I'm saying is not to rely on it. Most reflective stuff won't even come into view, if at all, until the car is almost on top of you which could be too late, this is why road workers are now going to an LED vest.
My lighting is as this (not saying you need to do this, it's just what I do); my rear lights (yes, plural) consist of a Light & Motion Vis 180 (not the Micro Vis 180) which is my main light mounted on the seat bag that at night it's on steady mode (more on this later); my second light is a Cateye LD600 mounted vertically on my seat post (vertically because it really stands out from the side) which is on flash mode; my third light is a Planet Bike Super Flash Turbo mounted to my helmet and it too is on flash mode. Then for reflective stuff I wear Road ID leg bands, a cheap Home Depot brand neon green mesh reflective vest, and there is reflective tape on the helmet but this is all but useless due to the helmet angle to car headlights, my shoes have reflective diamond in the back, and my saddle bag has a reflective beading on it.
After spending time over 40 years riding and driving at night and seeing various bicycles with rear lights I think having 3 or more lights is better than just one real bright one. 3 or more stands out like a Christmas tree, in fact the most noticeable bike ride I ever saw was a guy who had 13 rear lights, none were seriously bright but he really stood out. He had 5 lights mounted on each rear stay, and 1 each on his seat post, seat bag, and helmet. If someone missed that guy and hit him from behind they should be deemed legally blind and have their license taken away!!
This flash and steady stuff is again just something I do, there is no proof that what I do is better or worse. European countries have mostly banned flashing tail lights because their studies show that a motorists has a difficult time ascertaining the distance between themselves and a cyclist; but American and Canadian studies showed that a flashing tail light attracts attention faster...hmm, what to do? I know, I'll do both! The guy with all the lights I mentioned above had all of his on flash.