Any of the 'Colt' repros are good, but as you say, some are marginally better. I have a second gen Walker, serial #1816, so not too far down the production line after they started 'making' them again. If you can get this revolver at a good price, then go for it. You'll likely need all the fixings, including that all-important .451" ball mould, and maybe advice.
Come back here for the second item...
And welcome to the 'smell o'cow fart' brigade!
tac
BTW - let's have the rest of the URL so's we can admirify it.