Personally, I love the design of the 6170, but when it comes to features, the z500a trumps the 6170. The z500a has 6mbs of storage for photos, videos, ringtones, etc, whereas the 6170 has something like 2mbs. I think they are both great phones, but it all depends on your tastes. If possible, go hold both phones. I think they are both pretty comfortable, but I like the Nokia slightly over the SE.