I have replaced my ailing B&M Lyt plus with the catchily-named Lumotec IQ Cyo senseo plus T also made by B&M. There are currently around ten+ variants of the Cyo, including 40 and 60 lux versions (the 40 lux incorporates a reflector which the 60 does not) bottle or hub dynamo versions, near-field lighting versions, automatic on/off via light sensor versions, versions with daylight running lights and either a black or silver finish for some of these models (as discussed previously).
Where the Cyo T excels is in its urban-friendly features, such as daylight running mode which to helps mitigate the risk of not being seen by negligent motorists, and the automatic switching between day & night modes via light sensor. The daylight running lights are particularly effective at drawing extra attention in daylight, directing a good amount of light at oncoming traffic. At night, the two lower LEDs which remain turned on are illuminated to a lower intensity, to avoid blinding oncoming traffic. The automatic light sensor can be over-ridden if desired to keep the Cyo T in daylight mode at night. The level of road illumination provided by the light in ‘day mode’ is sufficient in well-lit areas where being seen may be of more concern than lighting up the road itself, still meeting the minimum standard for a ‘proper’ light.
The stand-light is different to other lamps I have used. Like the Lumotec Retro, the stand-light is provided by auxiliary LEDs rather than using the main beam as the Saferide and Lyt do. However, unlike any of these other lights the stand-light does not merely stay illuminated until the capacitor has been discharged, it is timed to shut off after around four minutes despite the capacitor having a capacity for a greater length of time. The result of this is that the stand-light is immediately available if the bike (dynamo) is moved again.
Unlike the 40 lux version of the Cyo and the Lyt, the Cyo T does not come with an integrated reflector. A reflector is available for adding to the bottom of the standard Cyo mount, although the Brompton mount is not compatible with this. It is also worth noting that the Torx bolt which comes with the standard Cyo mounting bracket is not compatible with the Brompton Cyo mount due to the different tube thickness. Whilst this set-up has left the Brompton without a front reflector, the daylight running lights are definitely a replacement which is in the spirit of the law even if it does not conform to the letter of it.
I like the Cyo T. In plain terms of brightness and throw, it is not as good as the Saferide, but as I stated in that review, for urban utility riding the beam of the Saferide is overkill. The Cyo T also provides more than enough light for riding along unlit roads. However, the daylight running mode and the automatic switching between day and night modes make this an ideal choice for the primarily urban cyclist, whilst the beam it provides is more than sufficient for riding on unlit roads and paths too. Unless you do a great deal of your riding on completely unlit roads, these extra features probably make the Cyo T the better choice.