Man, that X5SND guy has some pretty sweet shoes....
First off, welcome to the forum! Nice clean looking X you got yourself there!
As stated previously (and also in my sig) my wheels are the style 300M from the X6M, and are of course 20s. As far as recommendations/input for your E70....here's something I'd like to throw out there...
If you're in the market for some new wheels.....I'd be looking at 22's for an E70. Heres why: For starters it's a bigger vehicle, and thus has larger wheel arches to fill. The 20's do ok, but 22's just have a more proportionate look about them....not to mention the serious road presence of a 295/335 set of rubber! Illustrating what I mean, heres a set of 22"modulare's.
Granted it has an advantage as its obviously been lowered (and those Modulare rims are some serious $$)....IMO the 20's get lost in the vehicle where as the 22's set everything off!