OK, I'll play... I'm 5'9" and weigh in at 185. I live at 3,300' and frequently ride to higher elevations though not always as Arizona offers lots of choices. I do not hesitate to twist the right wrist and typically cruise 80 on the interstates. My 17 SF is completely stock though I did add JES lower wind deflectors. My bride who is 5'1" and 118# rides with me about 25% oof the time.
Solo I consistently get 43 and two up 41. Up in the southern Rockies {8, 9, or even 10K'+} I have seen 50 a time or two but usually average 45-47 solo and 44 two up. These numbers are fairly consistent between pump calculations and the digital display and yes, I run nothing but premium {91-93 octane}. My mileage probably reflects the fact that I am rarely at much less over 3,000 rpm which gives me decent acceleration and an 80 mph interstate cruise and I use cruise control a lot... works for me.
