What a odd set of requirements. The entry level avr-146 would sound cleaner, if not louder than your neighbor's sony. Odds are that the dorm room is not the besta ccoustic environment though, so perhaps the EzSet/EQ feature would be of some use to you. It comes on the AVR-147.
As for power ratings, the Sony's are optimistic, H/K's are not. (Look at power consumption, for one. The HK 146 draws "540W maximum", and the Sony's is most likely about half that.)
If for some reason, you like H/K above all other brands,
here's a handy comparison chart