Thanks for re-igniting this post. I'm considering a 2012/13 GS 450h vs 2013 IS300h. From my understanding the IS is cheaper to buy, run etc, and is smaller and more agile, but nowhere near as fast and possibly slightly less luxurious. So for me the IS300h is great, but perhaps just not fast enough.
What are your thoughts on the comparison, particularly around the difference in speed?