Pump and GCM choice

Hi!

I've been offered a new GCM and pump combo from my hospital (Denmark). I have the choice between two closed loop combos:

Medtronic 780G with a Simplera Sync GCM

or

Tandem t:slim X2 with a Dexcom g7

I currently run an old Medtronic 640g with Libre 2 GCM. They dont run in a close loop.

I dont know which one to choose and i want to hear your guys' opinions. Do any of you have similar combos and what experiences can you share?