that is a good question.
I have my IS200 for a year now. Am I happy?
Well....
there is one thing I hate and it is fuel consumption. or maybe its just my toughts. my first car was '92 corolla 1.8 N/A diesel using ~5~6 l/100km... my lex drinks around 10 litres per 100km, so I would not say it is much, but I still can't get used to it since I filled my rolla with 40 litres of diesel every 600~700km and my lex needs 70 litres for the same distance.
apart from that, since I am not driving my car like I have stole it, 155hp is enough for me, but I am starting to look at some power upgrades.
I think IS 200/300 is one of the best looking cars, comfortable, well made, chicks like it....
and since I am 22 years old I wanted a car I can service myself.
In my country you are a real 'player' if u have a Merc or Bimer, stupid people buy these brands and drive like complete retards and anyone who sees a merc or bimer on street are extra careful and even scared of them. I even got my face hit and nose broken with a knuckle trough my cars window from a SL500 driver without any reason. But those are two car makers I hate and since I tought it was a time for a RWD car, this was my choice.
well, maybe I forgot something, but long story short - great car :)