This was my second IS 350 purchase. I leased a 2006 IS350 for three years and liked it so much I just bought a new one after looking at BMW, Acura and the GS350. Just can't find a car as nice with both style and performance. It may not be the best in class in one particular aspect but it really is the best all round luxury sports car, hands down.
Don't waste your time on the 250. The 350 is Power & Luxury at a great price. Worth the upgrade.
Sharp turns and a little more seat padding. Just a little nit-picking here.