Mule, sorry for the late response but I've been busy with fantasy football for the past several days.
My Mirage 595is speakers are rated at 6 ohms nominal down to 4 ohms minimum and with a maximum power rating of 125 watts. I have a Denon 3805 that does not seem to have any problems powering them. Like most AV receivers it does get warm but not enough to fry an egg.
Here's my setup:
http://forums.audioholics.com/forums/showthread.php?p=84344#post84344