What year are you looking at? I'd hazard a guess that it might perform better being EFI, but possibly not as special? I can't imagine the big red pig is any different, but the 450L is very well put together.
Price wise, likely 05-09. They seem to have made only very minor changes up until ‘18 anyway. They’re all carbed models, would prefer EFI but not a big deal.
Surprised they only went EFI in 2019, thought a newer one might be on the cards but guess it'll feel slightly more modern than the CR250. Can imagine it being a very hard decision to sell the XR.
What year are you looking at? I'd hazard a guess that it might perform better being EFI, but possibly not as special? I can't imagine the big red pig is any different, but the 450L is very well put together.