Have grown 708s both free range and indoor, they were never great rangers prefered to stay in the house , they grow very quickly and achieve very good weights, biggest problem was keeping them on there feet tended to go off there legs easily,we did manage to rectify this with another batch by dropping the protein levels in the feed after 8 weeks and feeding plenty of greens and forage which they liked, should be ideal if you want some bigger birds for xmas .