+1 for the B&M Cyo and the Cateye LD1100 if you can still find it. I have had the two first Cyo models (one long range without reflector, one wide cast with reflector, the latter superior unless you're a speed merchant and have ultra-good eyes) for a dozen years or more, and a whole row of the Cateye LD1100, which can be ruined when the battery cap, which contains two of the LEDs, falls off on the road and is lost -- I now secure the cap with a tie wrap between the rows of LED lenses. The LD1100 are expensive but there is nothing as good, so I keep making the effort to find them and spending the money.
All my bikes have racks, and of the dyno taillights on these, the best from a safety perspective is without question the B&M Line Plus, which I supplement with the flashing modes of the LD1100 -- photo in action at the bottom of the page here:
http://coolmainpress.com/BICYCLINGbuildingpedelec5.htmlAt the front I supplement the Cyo with a small German-branded Chinese torch that appears to have fallen off a truck in China, because none of the B&M lamps have flashing modes. The torch is also good in the daytime, besides making me more noticeable, when I judge some driver is closing too fast from the front on a lane I know from experience is too narrow for us to pass without accident unless both are crawling: I turn the torch on the fish mouth mount directly onto the closing car's windscreen. Never fails to slow even the most obstreperous of the immigrants in their first cars. (I wouldn't advise you to do it on tour, though; German police, for instance, take a very narrow view of flashing lamps, almost as if they want a monopoly on them.) At night I turn the fish mouth to direct the flashing white torch onto the road, from where it reflects more than enough light to draw attention not only to the bicycle signature of a flashing lamp but also to the cycle and the cyclist. The torch also has two steady modes of different intensity, one intense, the other weaker to stretch out the use of the lipo battery, so it can serve as an emergency lamp, but none of my B&M lamps have failed, nor any of my Shimano and SON dynamos. For a tenner and free delivery from Aliexpress the torch is a bargain, which none of the B&M lamps are.
Be careful in choosing your B&M lamp. Further to the warning already given above, B&M can be a bit careless with the description "IQ", which describes the reverse reflector which mounts the LED in the CYO, which fathered a whole family of IQ lamps, of which some are brilliant and have been recommended above by name, and at least one is crap, decent enough on first sight for the amount and reach of its light and its versatility (it works with electric bikes) but impossible to live with because of its migraine-inducing hotspot. See
http://coolmainpress.com/BICYCLINGbuildingpedelec6.html for hotspot photos of the B&M Fly E which I'd definitely advise you to give a big miss. Some of the CYO sequential series haven't been as good as the original ones I'm enthusiastic about above (and even so I'm much more enthusiastic about the one with with the R in the name and the reflector), so check if you buy NOS stock at a big discount that you're getting the good ones.