I have two front zip suits, one a shorty farmer john, the other a step in "jacket" suit. I have no problem with either of these, but I still prefer my back zip suits to front zip. If there's a problem zipping the back zipper, the leash for the zipper is too short. Add some length to your leash and you shouldn't have any issues.
For those that asked, yes surfing with a front zipper sucks royally.
For those that asked, yes surfing with a front zipper sucks royally.