A Boxster is a rockin' car! A flat 6 engine is also called a boxer engine because of the way the pistons resemble the way a boxer jabs.
A F6 is supposed to wear less than an I6 or V6 because of its configuration. It also has a naturally lower center of gravity. I don't know of any other pros or cons.
You don't need a weatherman to know which way the wind blows - Robert A. Zimmerman