24/7 Pro are VERY decent firearms and their parts are similar enough to the Millennium series that many are interchangable, extractors, firing pin, strikers, etc.

I carry a Millennium PRO PT145 daily and has very nice feel and accuracy, along with a most important -> reliabilty. It weighs less than my Sig Sauer SP2022 in 9mm and gives me 10 rounds of .45ACP for defense.

These are nice quality firearms and will do you well.

One of the things I like about the 800 series, is that Taurus makes a complete slide and magazine in 22 LR to swap out with these pistols. Their ergnomics are very good, giving quite positive control of the weapon, as well as one of the nicest feeling triggers I have felt. Quite short reset in SA when fired.