A LED or Xenon lamp attached to the head (link shows example) seems to be ideal for bedikas chometz and superior to a candle? Do contemporary poskim offer a view?
The other way of looking at it is that a candle is sufficient--that is, you need to search as well as you practically can by using a candle, you don't need to go beyond that level of search. Source: @Gershon Gold's answer noting that
Yes, I know the downsides of seeing chometz in the home after Pesach starts.
Also the start of @Gershon's answer:
In other words, a flashlight is not required for the search.
We can imagine a continuum of inspecting that has "search by a candle" near one end and "move all the furniture for a minute inspection with the brightest lights you have" at the other end. Either could have been specified by the Halacha. But only the first one was.
Remember that Judaism does not have a blanket rule that "greater piety equals greater good."
Summary: no need to use more than a candle for searching. (But ask your own Rabbi for personalized advice to follow.)