I am deciding beteween the Onkyo TX-SR501 and the 601. I am only connecting a DVD, VCR and cable box to the receiver. (I have not bought speakers yet, but have decided on the JBL SCS160SI 6.1) Is there any reason I should buy the 601 for an additional approx $150 over the 501? BTW, I live in a typical, ie smallish, NYC apt.