I tried lots of different weissbiers while in Bavaria this past summer. All were really good, but some were better than others. Weihenstephaner was the best of all I tried, so if you're trying to equal that you're definitely aiming high. I brewed a weissbier when we got back from Germany using a recipe from the Weyermann website. Didn't do anything too fancy, but I did watch the pH closely. It turned out awesome and sadly the keg blew the other night. So, just keep trying.