Well said 'yeti guy'
I know 7 people who have 5s and they love them and have had them for years.
I know one person with a 160 'Alpine' and he loves that too.
I don't believe there is anything in price so the 160 should get you a smidge more exclusivity.
My advice would be if you have more than one bike, then get the 160, if it's to be your only bike, then i'd go for the 5 but GS said, there'll be no disappointment either way.