With the excellent target separation and ability to pull good targets out of trashy areas with the stock coil will there really be an advantage to having the 6 inch? I'm also not really seeing an advantage to owning a 15 inch unless you hunt a lot of fields which I don't. I guess in my situation I'll probably pass on both unless it's proven that a 6 inch coil on the 600 will make up for the lack of recovery speeds 7 and 8 that the 800 possesses.