2.6k for a k4 is an total bargain. think i said that when i saw it advertised.
id agree, a test ride is whats needed. if its not used for commuting then its all about how much u enjoy each bike.
whichever u do pls pm me to let me know how u get on. Im thinking of getting a sports 600 myself and i dont have much experience riding yet.
good luck and enjoy