As battery systems improve- the use of non-cord systems will become more common and the parity will be such that for non exploration dives the considerations will be negligible.
Any "potential" entanglements created by a can light are outweighed by longevity and brightness now- but the convenience, light weight, swappable battery compartments , non entanglement features of more modern non-cord lights make them an attractive alternative in a given price range.
If you aren't doing 4 hour cave or wreck dives an 8 hour burn time isn't a necessity (most such dives are likely 1-2 hours) - so cost factors in.