Lots of scenarios-
Get 70 cpm, run under 800 miles/wk
Get 34 cpm, run 3400 miles/wk
Run for high % of low dollar freight...could bite you in the arse :wink:
Run for low % on high dollar freight and still keep your shirt
As Yoopr said, the best way to find out is ask what the load pays (if not on the BOL). Make sure FSC and the rate are spearate (but all considered).
You might also want to check the deadhead between loads. If Its a lot of deadhead, with little return on the % for hauling it, you may be better off cpm. This is helpful if you are currently employed somewhere, as you have other drivers to talk to.
HTH