We’ve had a Duo temp pro (a less fancy version of the one you’re eyeing up - it’s not got a grinder attached it’s actually quite basic but it was bought as a ‘starter’ machine) from Sage for 4 years now, used at least twice a day every day and I have to say it’s fantastic.
sage are a great brand we’ve had no trouble with it, it’s easy to use and easy to clean!
there’s a huge difference between the bambino and the barista express, what kind of coffee do you drink? Lattes / Capps or just Americano?
edit to add: how big is your household? The bambino would comfortably fit one cup under the portafilter at a time but the express would comfortably fit two, so you can make two at once