Which then begs the question: If your primary intent is for plinking and target, why do you care that the energy from a six is more than from a four? More energy for that purpose is moot. Inorganic targets do not care. At some point, one must make-up his mind what he intends on using it for.
Yes, target shooting is my primary objective. And with the balance vs barrel heavy vs longer site radius making my decision difficult, I see the 23% increase in energy as an additional consideration.
If adding a 357 magnum revolver to my collection, I see an advantage to having one that extracts more capability from the 357 magnum round that could be beneficial in longer range shooting which would differentiate it from my other pistols (and when combined with the longer site radius that makes sense to me).