Looking for advice on a milling machine.

[pugs]

Also these guys up by Wausau, they do more new sales, but get used stuff in all the time as well.
http://www.machinetoolandequip.com/

With the economy down a bit many of the used dealers are desperate to get rid of stuff and are more willing to deal than they have been in the past. I got a used full auto bandsaw for my CNC shop from a dealer over in Detroit for cheap (even with shipping) a couple months ago.

[9W Monighan]

Here's my favorite place to shop. I just bought a nice Cushman 3 jaw chuck for my Monarch 10EE for $59 + ups this past week. If you're patient you can find just about anything.
http://www.hgrinc.com/