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Define "better"
easy to install
easily available
no nail heads in it and doesn't need sanding (if you're thinking about reclaimed pine)
maybe less draughty
maybe warmerVS
looks less original. unless you just get engineered wood that looks the same, minus the squeaking, warping and knotty bollocks.
Also put in insulation & UFH, after removing no doubt years of builders rubble, and clearing out any air bricks.
Define "better"
VS
We of course spent a fortune on [the cheapest] exactly the right width and age reclaimed pine.