Quiet
"Nuclear-powered boats can run... more quietly"
Non-nuclear subs can actually run more quietly, because they can turn the generator off and run on batteries, while you can't turn off the reactor (primarily the cooling system) on a nuclear one. Nuclear subs have much better range and endurance, but as pure stealthy attack boats non-nuclear can potentially be better. The question is essentially whether you want something that can loiter out of sight nearly indefinitely but might be detected when actually attacking, or something that can't hide at all in the long term but can effectively disappear for short periods.
Biting the hand that feeds IT
