My riding is nearly all on well lit roads, so I only really need "to be seen" lights. I use:
A set by Oxford (9-LED "torch" on front and a 3-LED rear), the rear set to flashing. This set is normally £19:99 in
Decathlon, but they were reduced to £9:99 a couple of months ago when I got mine. The front is (just about) adequate for the short amount of unlit blacktop I occasionally ride on, but only if I go very, very slowly. I only switch the "torch" on when I need to see, as I presume it will get through batteries quicker than the rest of the lights.
A set from Wilko (front and rear both 3-LED). These look as though they are the same design as a Smart 3-LED rear. As mentioned in the "bargain" thread, these are £6+ a set, with batteries, at Wilkinsons. The front is set to "steady", and the rear set to flashing.
The front light from an Aldi set of 2 No 3-LEDs. This is greenish and not very bright, and set to flashing. I'm looking to replace this with a brighter and whiter flashing light.
Finally, the rear 3-LED light from a set from Lidl (I do not use the front light which has a conventional bulb). This light only has a steady mode (no flashing option) and is marked BS6102/3 - My only "approved" light.
All the lights take the same size batteries - so I now expect to be making regular visits to my local poundland during the winter to get blister multi-packs of AAAs.
...and yes, I do carry some spare batteries, but no spare lights, except for the redundancy in the list above.
The three rear lights are mounted well apart (the steady light on the rear of a pannier rack, one flasher on the seatpost and the other flasher on the offside seatstay). The three front lights are all crammed together on the bars. Does anyone know if it is important to keep a flashing light and a steady light well apart - if they are too close, does one prevent the other being seen?