The 24/7 pro is the basically an updated millennium pro.
I own both a Millennium Pro 9mm and just bought a 24/7 Pro Compact 45. The 24/7 features a decocker and 3 dot sights. Also, I'd say the quality and fit & finish is better with the 24/7 than on my milpro. I also like the firing pin block design much better on the 24/7. See my post on taurus armed.
Definitely look into the 24/7. CDNN has them for $299 RIGHT NOW.