vrsca2003 I already have a couple of thousand more miles on my metz then I got from my stock dunlop but I'm hard on tires. There is a very slight difference in how the bike handles, does take a little more lean to get it to roll in the corners is my own opinion. Looks are probably the biggest reason to make the change since you could get a metz in the 180x55 that would get the better mileage as well.
Max