For E70 this is the All Weather Floor Mat with BMW logo. I think it is made by Weather Tech. So there are essentially the same.
http://www.shopbmwusa.com/PRODUCT/37...cessories.aspx
For the F15, there is a new All Weather Floor Mat, shorter lip. Hopefully the E70 style f/mat will be available from BMW otherwise get the Weather Tech. I am thinking in terms the f/mats to be included upon delivery ( hopefully the longer lip is available soon).
Agreed OEM or Weather Tech which are custom fit are the best fit. Actually if you have any old trunk liners you may wish to keep them and actually lie it on top of the OEM liner when you have to cargo about dirty stuff. Less time to expend on cleaning the OEM.
http://www.weathertech.com/