Guys - Yup, they're MR-5s (MKII). Hard to believe that they were going for $130 each. Of course, they are budget monitors, but they are surprisingly good - and better than some other more expensive budget monitors, IMHO. I dare say that if I can't come up w/ a good mix w/ them, buying Focals or Adams wouldn't help.
I didn't notice that they were getting hotter than the other monitors I've worked w/.
Jules - the M-Audio I used were old Studiophile SP-B5. IMHO, these are an example of monitors which will affect mixing decisions negatively. Low end was particularly poor, and mid-highs were petty aggressive. But as a second pair, they'll be just fine because I've listened to music on those for years.
Never listened to the BX5, so I couldn't tell.