Buy a used BMW S1000R
There are plenty of the first 2014-2019 generation about. From £6500.
» Check the switchgear of Mk1 bikes – plenty went wrong. Ask if the right switchgear was replaced via a technical update. » Don’t worry about a lumpy idle. This is just a side-effect of aggressive cam profiles and crude low-rpm fuelling. » Check servicing after initial three years is all as it should be.