We went pretty deep into what little is available about the Twiist in this topic:
The Embecta patch style pump that’ll use Tidepool in a few years is also mentioned.
Simplera isn’t out yet for the 780G, maybe sometime next year. Its a one piece CGM which is a vast improvement but like the Dexcom G6 and G7 the simplera doesn’t show any significant improvements in accuracy over the Guardian 4. You’d have to try it and see how it works for you. I’ve been told by docs Medtronic has a trial period, same as Tandem, and that the trial can be extended to 60+ days. Get the time period in writing if you take advantage of a trial.
Even new pumps can fail. Do you have an unexpired bottle of Lantus and a box of 32G 4mm syringes in case of emergency?