I have been keeping a check on my fiel consumption my worst was 71.3 MPG & the best 85.89. the average over all my fill ups is 78.74 MPG.
The furthest I have travelled before filling up so far is 188.8 miles which took 2.24 gallons (imperial) which is 10.19 litres
If you feel that 6 cylinder bikes are boring I can only think that you havn't ridden a CBX or heard the Honda 6 that Mike Hailwood raced
My 2 favourite engine types are Vs either twins or 4s and air cooled boxer twins. I used to own what I consider to be the ultimate version of the latter in my BMW R90/S