I also have speakers from Piega and am completely satisfied with them. But that's probably primarily a question of price, as you can connect any high-quality speaker you like
Well, it's a bit pointless to discuss what high-quality loudspeakers exist in this amplifier price range. Ultimately, it's a matter of taste, extremely room-dependent and much more. However, this may be interesting information: In contrast to the almost identical Denon model, the Marantz has the option of cutting off the low frequencies of the speakers at 40/60/80/100 Hz. This offers more flexibility if you want to buy a small subwoofer.