Thanks for your comments. The reason for my question!! My brother has been listening to my system(s) for 30 years. I have made some recent improvements that I think really caught his attention and now he has started down the slippery path to improve his system. He loves my RF-7's as do I. Having never heard the 83's I asked the question for him. [MY RF-7s are going nowhere! ] So based on everything, price a consideration, I will recommend the RF-7's to him, giving all the feedback you gave me. I have made some serious tweaks to my system. I cannot believe the RF-7's had what I am now hearing, in them. I'll post that separately. Stay tuned. Thanks for the help once again.