The best replacement for canon flash is nikon flash.

The best alternatives to canon flash are rated as following:
★★★★★  nikon flash
★★★  sigma flash
★★  yongnuo
★★  metz
★  nissin flash

Your alternative for canon flash is not listed? Suggest!
Speaking about canon flash, one probably shouldn't forget about sony a7.

Other search terms related to canon flash and their ratings are:
★★★★★ sony a7
pocketwizard
You have in mind a companion for canon flash and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of canon flash in all years. Click on graph for more.
canon flash
nikon flash
sigma flash