I just got my IS 350 a few days ago. This car will blow your mind. I mean it. Don't test drive it, if you don't want to buy a car any time soon. If you do then you will know what I was talking about. Just traded in my LS 430. I have no regrets. I also have owned couple BMW's before. This car rocks!!! Around town it feels like driving Lexus, but if you take it to those curvy roads around town, then you know that you drive a true sport sedan.
Acceleration, handling (got G-spyder 18" wheels), keyless entry, premium lexus sound system, ventilated seats, quality of the interior (excellent). Exterior is pretty cool too.
A little road noise on the rough road, but nothing uncomfortable. If a back seat space does not matter then go for it.
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