Hello
I was comparing the engine Performance of the BMW X6 M E70 vs BMW X6 50i F15, in numbers it seems that the E70 is much powerful but considering the technology of the F15 it seems close , so which is faster

1-drag race 0-60
2-Top Speed
3- Reliability

If considering buying the E70 X6M with 10,000miles and willing to keep for 100,000miles what are the watch outs

Moreover, as i was shopping around i witnessed some include the bubble Hood and others don't, is this an optional feature ?

One more thing , are there any 2014s or the production ended 2013
Thanks