I think that Menlo should probably be placed before Consolas. The reasoning I have here is that many of us who are using the Trilogy from Macs probably have Microsoft Office installed -- and if we have 2008, we have the Microsoft "C" fonts.
Consolas does, admittedly, look really good on a Mac (I use it in XCode; I wasn't even aware that I got this new Menlo font when I upgraded until just now), but if you really want to give Mac users the best Mac experience, I would consider putting Menlo before Consolas in the chain, as it is highly unlikely that any Windows or Linux user will have it.