I have yet to see a 750 for sale.CR has a trouble free steel swingarm. CR has no external adjustments on the forks but once you get them sorted for you there is no longer a need to adjust. Lot of options available to swap out the forks exist, the SP forks are not all that great anyway. Half fairing is a cool look on these engines with a trellis frame. Everything else is identical. I believe there were more CR's imported to the US than SP's and they were cheaper and still are.
If you are a lightweight fellow, don't overlook the 750 CR, they are a rocket too.