I have always had the BEST of luck with McMurray. I order 25-50 meat birds from them a couple times a year... Never had problems, they are very nice and helpful. They always send a couple extras with large orders and gladly refund you for any deaths. I've never lost more than 2 out of any bunch and they were shipped all the way to florida.
Its a good idea to put some gatorade in their waterer for the first week or so. The extra electrolytes do wonders!