That five inch 627 is likely a 627-2. Target Champion is something I have seen on exported guns, not so much in US. The five inch is extremely hard to come by here in US. If you can have only one, that would be my choice. I looked for 15 years before I found one I could buy. I only saw two before I bought one. One was sold before I saw the ad and the other one, I ran out of money!

I like the 627-0, too, as it has the five and a half inch barrel that you indicated and checkered top strap. The 5.5 inch guns were the last of the guns to receive top strap checkering i believe.

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Richard Gillespie
FBINA 102