If online tests or reviews you read, so a lack of on-screen display, the terminal connections and also the remote control be faulted. But how many times you stuck to speakers? How often directed to the device a new? Of course, a better Einmessmikro as the big brother VSX-920 is to be preferred, however, is any, if it does not adjust the settings automatically selected, probably to be able to manually enter distances etc.
The Pioneer does its job. Actually very good. Space I like super. Technically level I have not once had to exhaust him. For my purpose (room approx 24m2, DIY speaker type "Cyburgs Needle") it is technically more than enough power. Visually, he does something forth. The calibration process was smooth. Corrections were hardly necessary.
Criticism? Yes, there is: The remote control is in fact overloaded (can be with her but also other devices - in my case, the Pioneer BluRay Player - operate). If it is dark, you find yourself barely cope (unless they are known to the heart time).
What at one device nowadays also should not be ignored is the ARC (Audio Return Channel). In the Pioneer does not have.
Not necessarily a bad thing, but worth mentioning: The VSX-520 is quite short. When I wanted to make my BluRay player (BDP-51FD) to the AVR, I realized that this is so short that not even see the feet of the BluRay player complete halt on the device. Because I would have liked a little more foresight of Pioneer, because I would rather place the heavy equipment (AVR) down and the lightweight unit out.
Overall, a strong buy recommendation.