u/mrskyrock7

Hey guys, as an absolute beginner, I need some help with selecting the best amp for my new setup :)

I bought some MB Quarts 1000 for 100€ and thanks to a recommendation from the lovely u/NTPC4
also got a Fosi Audio ZD3 DAC.

Now that I got the new stuff I noticed some of my problems from my old setup persist, so it‘s also time to replace my old Grundig Fine Arts R1 amp.

I am looking at some used amps and there is three options for ~150€ each:

Onkyo Integra A 8650
Sony TA-F222 ES
Yamaha RX-797

which one of these do you think is best or is the best fit? Anything I should look out for when getting a new amp in general?

Found a deal for these Canton Ergo SC-L with the control unit and a Denon PMA-680R amp for ~500€
Should I get that setup at that price, or keep looking for better deals?