My first choice would be option 2, then option 1. The V8 would be my last choice, partly because it is not new and partly due to the V8 (the 70% of X5 purchasers who chose the I6 can't be wrong).

__________________
2007 X3 3.0si, 6 MT, Premium, White

Retired:
2008 535i, 6 MT, M Sport, Premium, Space Grey
2003 X5 3.0 Steptronic, Premium, Titanium Silver
2002 325xi 5 MT, Steel Grey
2004 Z4 3.0 Premium, Sport, SMG, Maldives Blue