Fish,
I usually have good luck, except with these. Like you, I have not actually broken a grill or foot, but use extreme caution. I can see a day when I could break one. As for taking back the RF-7, Damn it's heavy, as you know. I was happy the repair was simple and I could do it. I did take back the RS-7 but like a car, it operated fine at the "dealorship". If I pressed it I could get the stor eto get me a new one as I have spent insane money there.
How do you like your Denon 2900? I have been considering getting that or the new Yamaha (not sure of the number). Do you use yours for DVD-a or SACD?