Well you fly a exotic Harris?,and look at the myriad of North American hawks such as Harri's,Red Tail's and Ferruginous etc.Harris's are the most popular hawk in the sport and not just for novices.And for hunting crows hybrids are more proficiant than straight peregrines."Exotics" have carved a very big niche in falconry in the UK.Harris and Red Tails etc have the advantage over Goshawks within rabbit hawking by being able to wait on in hilly terrain etc as they are more versitile so in that manner they out perform the "natives",but at the end of the day you use what you prefer and to your abi