Not a huge deal either way but based on experience with both piper and cessna products I would say go cessna. People seem to like the cool factor of low-wing planes, which is fine for private pilots looking to impress their girlfriends.

But there are a lot more instructor jobs in cessnas than in pipers, and they would prefer to hire instructors with time-in-type given a choice.

If you'll be flying south of the 50th parallel, Cessna windows open to help stay cool on the ground (or even in the air).

I personally think cessnas are a bit easier for ground reference maneuvers.