Well a porsche 911 cabrio has never been a big seller as to many it misses the wholepoint of what a 911 is about.
In the past (pre-boxster) the 911 cabrio range, had more scuttle and shake, so you compromised to get that open top.
Now you can buy a boxster for half the price of a 911 cabrio and it's just as fast, rated to handle even better in many peoples minds and was designed from the out set as a roadster so no loss of body rigidty as a result.
While i can see why people would choose a 911 over a boxster (it's an all time classic design), i do struggle to get my head round the assertions that a 911 cabrio is better for open top motoring? it compromises on the virtues of a hardtop 911 to offer what a boxster does at like twice the price...