Stability is a problem with the moon. It sounds counterintuitive but you corner/steer with your core. A traditional saddle lets you point the bike where you want to go. Knott tried a moon saddle and almost lost control of her bikeI'd never use one.
If you're not finding the seat that's "love at first sit" it could be too much padding in the shorts? Try your current saddle without padding just tri shorts and see if it improves.
It takes time to find the elusive shorts/saddle magic combo. The Terry Butterfly is relatively cushy, combine that with very well padded shorts and it could be bad. Try less padding to see if it moves you in the right direction.




I'd never use one.
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