Well after having a Daytona, you won't be happy on an SV or any of those inline 4 things.
(a 675 is an SV on steroids.)
Like many above have posted... more bikes is the answer. Think of it as the right tool for the job.
I have 6 bikes right now and they all have a specific purpose.
KTM: dirty fun.
TTR: pit bike and flat track fun.
Sprint: twisty road fun.
DRZ: Dual sport fun.
675: Race track fun.
250R: more race track fun... okay it's really to help me to go faster on the Tona and it's working. Not to mention, it's just a giggle to ride.