I recently gravitated back towards Balsamiq, as I helps me think at the right level, and not go too much into detail.
And love their licensing, I bought a license 10 years ago, and got ten years of upgrades. Recently they had their first paid upgrade in ten years, this is just unmatched in commercial software.
I'm too slow with any software solution as it allows for too many details.
Yeah, I'm ol' skool. If I want to convey interactivity or present the flow, I opt for Axure RP