Yeah i'd say get an R, or if u could find a 00' or 01' Canadian spec CW then thats the ultimate way to go.
I just think the R has subtle differences that make it better in everyway. Their limited availability, 5 lug as mentioned earlier, sideskirts, front lip and wing, (save u from buying a kit on the LS if u chose to) carbon fiber inlays, lighter weight and LSD but man i could go on forever.
Make sure u can afford the insurance on the R though, i'd assume the LS would be quite a bit cheaper