The Carolina Reaper Pepper is a pretty darn hot pepper but in my opinion the Ghost Pepper is much hotter than the Carolina Reaper.
The Ghost Pepper is also as of now considered to be the hottest hot pepper in the world and you better have something too cool your mouth off quick after eating the Ghost Pepper.
I've eaten both the Carolina Reaper Pepper and the Ghost Pepper and I've finished a Carolina Reaper Pepper fully before but the Ghost Pepper I could not finish and had to throw out.
It was good but it was too darn hot for me to take in but your heat tolerances may be different and you might be able to handle it.