Recently found myself in this situation. My fazer is an ongoing project so I fancied a bike on the road for this weather. My commute is 8 miles of backroads, I am surrounded by fields and potholed roads and there are some nice sandy byways not far from me.... so I went out and bought a new crf250l!
It ticked all the boxes... light, fun, 90mpg, and 8k service intervals.not as highly strung as a mx based road bike, more of a dual sport. Probably the best bike I have owned overall, sure, no good for motorways (although it will do 90), but perfect for my needs and always gives me a big grin.
Me being me though, in its 700 miles of life it has been treated to a full yoshi system, 13/43 sprockets, airbox mods, braided hoses and an electronic jet kit!
What im saying is, there is probably no 'perfect' off the shelf bike. You have to take the best bike for your needs and make it your own.... now, big bore kit anyone? Lol