Living up here in Buffalo, the IS 250 was an easy choice. I know I'm gonna need that AWD come wintertime!
That being said, and all other things being equal, I still don't know if I'd get the IS 350. My driving habits wouldn't justify spending the extra few thousand dollars (yes, I CAN afford it) for the extra power. I would probably never race anyone, and almost certainly wouldn't drive at breakneck speeds. The IS 250 has plenty of power for my needs, and certainly doesn't feel like a "slow" car by any means. And it's still a very fun car to drive. I bought my IS 250 for the combination of quality, styling and luxury. Based on those three factors, there is essentially no difference between the IS 250 and IS 350.
Hey, your driving habits may be different and the IS 350 may suit you better. But please don't dis us IS 250 owners. We all have reasons for purchasing the vehicles that we do. There are many more IS 250s out there than IS 350s - not everyone wants the IS 350. For some owners it may be the money, but for others there may be other factors involved in their decision. And there's certainly nothing wrong with those new car buyers who choose to buy a Camry either (it's an excellent vehicle, just not my style). In fact, some of the most well-off people I know do not even own a luxury car - they feel it's too pretentious. Different strokes for different folks...
Very well said jetman, my exact thoughts. :-) So you saved me recycling some electrons!