What features are important to you? What is your budget? Ideally I'd recommend a facelift model if budget allows/you are prepared to drop down a grade or two.
Originally the CT200h launched with grades SE-I, SE-L and SE-L Premier.
The F-Sport came along a year later.
At the end of 2012 the grades were revised to S, SE, Luxury, F-Sport and Premier. The old SE-I matches the SE, with the S being base grade below the previous SE-I
Shortly afterwards the Advance grade was added, in-between the SE and Luxury.
The facelift happened a year after the grade restructure above and was retained. Improvements across the board, plus reduction in prices.