I personally really like mazuri, I think it keeps everyone in top notch shape, I can get it locally and for a good price. I would prefer Harlan, as the main ingredients are not corn, rather wheat and such. But I have not seen any problems with my Mazuri and have some great momma's and babies.

And holy cow they grow fast! 60 grams average at 3 weeks, and over 100 grams at 4 weeks. This past week I had a male weigh in at 123 grams at 4 weeks old. I snapped a photo of him next to a 3 week old male and it's quite amazing.