Sumps have two disadvantages over canisters. I ran a 265 for years on 4 eheims. 2 pro 3s and 2 pro2s. One of the pro 2 was a dedicated peat filter to maintain pH and yellow water of the amazon. You can hide all the tech with a drilled over flow that acts as you intake strainer. The tech hanging in or on the tank is a choice.
First you have to keep the sump level low enough so that if your power fails you don't get a flood, sump has to be able to hold extra water from the tank. Also that you are home when it restarts depending on you overflow configuration. If you overflow fails to properly restart you get a flood. In your own house in the basement not a big deal. In a apartment your down stairs neighbor will be less than thrilled.
Second a sump uses far more electricity than a canister. A sump pump has to bring the water up several feet. the canister filter only a few inches over the lip of the tank. That's why canisters can get 500 gph with a 25 watt motor while the same flow with a 4 foot head requires roughly 50 watt. Not sure how bad electricity cost is in Norway.
As far as better vs worse. That depends on your personal situation. There are no magic bullets and I doubt there will ever be. Sumps are cheaper to set up. all you need is an old tank some plexiglass and silicone. You can then customize your sump however you want. However cleaning and maintenance WILL involve a wet floor*. Canister WILL be much more expensive but with an eheim it's unplug, close the valve (also disconnects canister), drag to sink, clean, stick back on tank, open valve turn on. If the power fails everything just stops.
* Pretty sure someone here will tell me that he's had sumps since he was 12 and its been 30 years not one drop on one floor. Been both hobbyist and professional tank maintenance tech for 25+ years. So far have not seen it yet.
