If you’ve ever been frustrated by trying to copy a column of data—or even just a handful of cells—from within a table on a Web page, get the Copytables browser extension for Chrome-based browsers, ...

So my question is, what's the best way to reliably copy all my old data from the old drives to the new ones?

The new online tools allow customers to get a copy of all data associated with an Apple ID. You can request account details and sign-in records and data such as contacts, calendars, notes ...