If you already own the series 7, then (depending on how tough your bristles are) the extra cost may not be justifiable. Don't get me wrong though, this is an exceptional shaver. Best ive ever had.
It a brilliant and fantastic shaver if it last as long as my old shaver also braun lasted 5 years .it only takes me only 20 minutes to do a complete shave now
a great product, and a great company