as other said, the ds1054z is the best bang for buck today, and especially if you unlock it with all options.
you said you're a beginner, then buy this one, get familiar with it, know all it can do, and know all it cannot do
then you will have more power in your brain to decide which better scope in the 2000€ range you will buy.
and also may be the 400€ rigol will be far enough for your needs, and you will forget about the 2000+€ one ?