A Duck is like a one night stand.Fun like a testride but if you try to turn it into a long time commitment it turns 99% into a full blown headache...
A 848 for sure is a nice toy for the track.Riding on the street/owning/using it I would not.
Then rather a MilleR.Except for the parts problem at least you get japanese or even better reliabily and save some money on top.
That is also the problem with the R1200S.As a track toy the 848 is probably more fun.For the streets the R1200S is almost as impractical.With options like two up bench,luggage rack,centerstand and such as for the old 11S there wouldn't have been such a dilemma nd BMW would have had a fun and capable bike for track and street duty...and much better sales!
Now if you ask which one to buy the 848 or HP-S I probably would say 848 unless you are a die hard boxer fan.They are both toys.The Duc is the cheaper one and you can still buy used Transit to get home if it let's you stranded on the track...
The HP-S you don't have money left for the Transit but you won't break down unless you bin it...English weather and italian electrics.Not a happy couple...
Cam belts,tensioner pulleys and flaking rocker arm can be a headache in sunny weather,too...
Ducatis are more to be enjoyed if you are rather filthy rich or as a poor working man if Bayliss or Stoner are riding...
Of course you can always pretend to be part of the lifestyle of the rich and famous and eat "poorich/porridge" behind closed doors;or peanutbutter/jelly sandwiches if you live in the states...