The CP Hornet is harder to build and set up then the Picollo, but Hornets do have better performance once you get it going properly.
The Hornet tail is more responsive since it uses pitch control rather than RPM control (same issues as FP vs. CP main rotors).
Expect to spend some time with the Hornet getting it all working.
Spend a few hours reading through the discussions at
www.hornet-heli.com and
www.rc-groups.com. If you can ignore the dirty laundry there is a lot of useful information.