I have two vintage receivers in need of repair and wanted to get some input as far as which one would be worth the investment. Technics SA 700 vs Sansui 1000x? Any thoughts or opinions on these units? I'm not an audiophile or an engineer, just looking for quality sound with our Polk SDA-2's (2 speaker system). The Technics has a safety light on and the Sansui has a crackle in the right channel in both the A and B speaker outputs - even when nothing is playing. Wondering which unit is "better" and which one would justify the repair cost? Thanks!