I think shorter rest periods are better for aesthetic purposes. I prefer to keep them shorter as I don't like to do much cardio in the gym. If you're not able to lift as much weight because your rest breaks aren't as long, it doesn't matter, as long as you are progressing (albeit with shorter rest breaks).
[Also - Bazza, you're nothing if not consistent. I'm sure if I did a search on recent posts by you we would find you posting in a number of threads in the bodybuilding section saying "who on here bodybuilds". It doesn't contribute to anything. I'd rather not have to trawl through 10 pages of bodybuilding v powerlifting trolling (which you ignited by your comment on the first page with "Lets not confuse bodybuilders with your standard gym goer trying to look better either.") in order to see if anything useful was posted in this thread.]
[Also - Bazza, you're nothing if not consistent. I'm sure if I did a search on recent posts by you we would find you posting in a number of threads in the bodybuilding section saying "who on here bodybuilds". It doesn't contribute to anything. I'd rather not have to trawl through 10 pages of bodybuilding v powerlifting trolling (which you ignited by your comment on the first page with "Lets not confuse bodybuilders with your standard gym goer trying to look better either.") in order to see if anything useful was posted in this thread.]