ive just grabbed a new one..
last couple i done there just aint enough light at around 3 oclock this time of year, specially since the clock went back, and thats even with the centre room light...
at night theyre essential...
i went back to finish a job i did with just the ceiling light at night and there were a few good misses i aint spotted... nothng serious, just missed em with the final trowel, awkward room, not much in the way of 'robotic method' if you know what i mean.. :-[