If you have significant year end bonuses, also look at balloon financing. It combines the lower monthly payment of the lease (lower than regular financing, but still a bit higher than lease) with benefits of ownership. If you use your bonus cash flow to prepay the balloon payment, you end up owning like a regular financing after the term. But like it was said above, the risk is transferred to you, like in a regular financing.
I like ballon for the low payments with optionality of ownership (also my irregular cash flow), but prefer leasing due to risk transfer and not deal with the trade-in bs.
Now: 2013 SG ZCP E92 M3; 2011 DSB X5d
Before: 2011 JZB E93 M3; 2008 Monaco Blue E90 328i; 2002 E46 Steel Blue 325i