I have a 456 and a Cotic Simple
the 456 is a holigan of a bike and the Simple is er well it makes me ride in a safer manner, it just handles differently
But yes the back end of the 456 is HARSH compared to the simple ( with the same tyres)
I would love to have a Soul but I cannot afford / justify it, but between a Carbon 456 and a Soul
Sorry the soul would win again