I still like the back zip, just spend the money on the 100% stretch neoprene and they are fine. I know a bloke who knows a bit about them and he told me....
a shoulder zip will last less cause you stretch the **** of them getting in and out but will be slightly easier to paddle in, they probably let in less water but not noticeable the back zip seals are good now. I just don't see myself paying more for the same suit with a shoulder zip and know it is going to last shorter than a back zip.
How cold does it get over there Doggie??
My current one is
longreefsurf.com.au/wetsuits/mens-wetsuits/steamers-longreefsurfIt's pretty cheap actually, close to what I payed. I have a nice mate who sorts us out...