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Many modern low power eyepieces will benefit, but some won't - it depends on the eyepiece. For example edmunds RKEs were designed to match the f/4 Astroscan and won't benefit from a coma corrector.
To some extent its a case of try it and see if its better or worse.
With high power eyepieces on the planets or bright stars you'd be better off without it, as it may be a source of ghosts or internal reflections.
If it corrects for field curvature as well that may be plus or a minus, depending on which eyepieces you use, for example plossls used with a fast newtonian may be better off without the corrector because plossls have a curved field that is a fair match for the average f/4 Newtonian.
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