RS200s have better fuel economy, as they are considerably lighter, so long as you aren't revving that glorious BEAMS up to 9,000! About 35mpg, from what I've heard, which is pretty decent. Insurance is more expensive, I pay just over £300 on my Sportcross, Altezza was £250 more. Maybe an IS300 is a better bet than either? Most of the pros from both choices.