I use Ahrefs, SEMrush as secondary data sources.......but I prefer to keep the data on local machines aswell and not "in the cloud" so I'm a long term user of Rank tracker by Linkassistant and have done for probably 10 years, Pretty sure i pay something like £10 a month or something silly as I retired the rest of the suite and only use the Rank tracker now.
One of my clients uses Serpbook ( now keyword.com ) and that was always quite friendly if your tracking thousands of phrases.