Hi!
in 400-500€ (with tax) range you have Rigol DS1054Z and 70 MHz tablet scope Micsig TO1074 Plus.
Don't buy 2ch scope. They are not as useful as 4ch with what on average people are doing today.
Funny thing, I either use just 1ch (poking around the circuit to see what's there), or am trying to correlate several signals at the same time.. Combination I use the least is 2 ch.
But that depends on what you do of course.
If you can afford more money, there are Siglents (mentioned) that are good scopes. Once you go towards 1000€ you start getting even more choices, but not necessarily much more measurement capabilities.
If you are beginner, I would buy something economical first. It is not impossible you might even damage it if it is first time you work on scope.
It is sorts of like a first car after you get your drivers license. And it will be your first, but not last scope.