You've got to think, ever time you would drive in the IS 350 and a 330i went by, would you regret your purchase? Wish you were driving the BMW? I certainly feel envious of other BMW drivers when I have to drive family Mercedes around...

Or if you were driving the 330i would you regret not buying the IS350?

If I was picking I would definitively take the 330i. I for one can not stand Lexus interiors that America has fallen in love with. I find the reddish wood to be extremely cheap and disgusting. Granted new era BMW's dont have the nicest wood anymore, but its not this ugly brown clay colored crap.

I don't know if your much of a spirited driver, but would you be comfortable with the 10 step process to disengage the electric nannies (and they're are a lot on the IS)?

In my opinion the IS is a car that lacks finesse. Sure it has power, but it does so in such an ungraceful way. At least a mercedes has got the badge and the prestige. The IS does it in the most boring way possible, and until they pick nicer wood, make a drivers car, with a manual, its out of the question for me!

P.S. Have you considered the 335i? That should be coming out soon, and would blow the IS 350 out of the water...