I'm looking for a vacuum cleaner that doesn't need dust bags and gets its power from the wall socket with a cord. The suction power has high priority for me
Edit: thankyou all for the recommendations, I appreciate it!
I realized, although vacuums with bags are in the daily financing more expensive I guess, they are more reasonable to consider in my case
I bought a Miele a few years ago and don't regret it. Best vacuum I've ever owned. It is bagged, but in my opinion that's better than bagless. I owned a few bagless vacuums over the years and they all have the same problem of excessive dust generation when emptying. You don't have that problem with bags.
Pretty good. It has about 5 power levels for different scenarios (carpet, upholstery, curtains, etc) with the lower levels being super quiet. Even at the highest power level, I wouldn't worry about bothering anyone by vacuuming another room.